Reference:1527: Difference between revisions

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{{#seo:

|title=Rolex 1527 (1930–1945) — Production & Dial Guide | Rolexopedia

|title=Rolex 1527 (1930–1945), Production & Dial Guide | Rolexopedia

|description=The Rolex Prince Railway 1527 is the stepped Art-Deco bicolor Prince — solid stepped gold construction (white + pink gold canonical, white + yellow rare), 1930 launch into the 1940s, Aegler 7½′′′ T.S. 300 in Extra Prima or Ultra Prima grade. Population fewer than 15 documented auction lots in three decades. Watch-guy.com calls it "the only rectangular Prince worth having."

|description=The Rolex Prince Railway 1527 is the stepped Art-Deco bicolor Prince, solid stepped gold construction (white + pink gold canonical, white + yellow rare), 1930 launch into the 1940s, Aegler 7½′′′ T.S. 300 in Extra Prima or Ultra Prima grade. Population fewer than 15 documented auction lots in three decades. Watch-guy.com calls it "the only rectangular Prince worth having."

|keywords=Rolex, Prince, 1527, 1527 M, Railway, Chemin de Fer, stepped, Art Deco, Aegler, T.S. 300, Ultra Prima, Extra Prima, vintage, bicolor, Mondani, reference guide

|image=Ref 1527 hero.webp

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</div>

The 1527 is the Railway Prince. The case steps inward from the lugs in machined bands of solid gold, alternating white with pink (the canonical pairing) or white with yellow on rarer examples, producing a profile that read in the late 1920s and 1930s as obviously locomotive-inspired Art Deco. Each step is a discrete piece of solid 18K gold machined into the case itself, which makes the construction structurally distinct from the smooth bicolor 971A "Tiger Stripe" and visually distinct from every other Prince reference. The duo-dial layout is the standard Prince architecture — hours and minutes upper, sub-seconds at six — and the movement is the Aegler 7½′′′ T.S. 300 in Extra Prima or Ultra Prima grade. Production runs from a documented 1931 Mondani example into the 1940s, with a steel + gold-filled Bonhams 2006 lot anchoring the late-production end. The reference appears rarely at auction — fewer than fifteen distinct lots in the public auction record across the past three decades, comparable to the 971 in stepped-bicolor form rather than to the more common 1490. The collector watchmaker watch-guy.com calls it "the only rectangular Prince worth having."

The 1527 is the Railway Prince. The case steps inward from the lugs in machined bands of solid gold, alternating white with pink (the canonical pairing) or white with yellow on rarer examples, producing a profile that read in the late 1920s and 1930s as obviously locomotive-inspired Art Deco. Each step is a discrete piece of solid 18K gold machined into the case itself, which makes the construction structurally distinct from the smooth bicolor 971A "Tiger Stripe" and visually distinct from every other Prince reference. The duo-dial layout is the standard Prince architecture, hours and minutes upper, sub-seconds at six, and the movement is the Aegler 7½′′′ T.S. 300 in Extra Prima or Ultra Prima grade. Production runs from a documented 1931 Mondani example into the 1940s, with a steel + gold-filled Bonhams 2006 lot anchoring the late-production end. The reference appears rarely at auction, fewer than fifteen distinct lots in the public auction record across the past three decades, comparable to the 971 in stepped-bicolor form rather than to the more common 1490. The collector watchmaker watch-guy.com calls it "the only rectangular Prince worth having."

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|-

| reference

| 1527 (and "1527 M" sub-designation on some bicolor examples — M suffix unexplained in primary documentation)

| 1527 (and "1527 M" sub-designation on some bicolor examples, M suffix unexplained in primary documentation)

|-

| family

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|-

| case shape

| rectangular Classic, stepped sides — each step a discrete machined band of solid gold (or 9ct on Glasgow imports)

| rectangular Classic, stepped sides, each step a discrete machined band of solid gold (or 9ct on Glasgow imports)

|-

| case dimensions

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|-

| movement

| Aegler 7½′′′ T.S. 300 — the same T.S. 300 family deployed in 1490 Ultra Prima examples

| Aegler 7½′′′ T.S. 300, the same T.S. 300 family deployed in 1490 Ultra Prima examples

|-

| movement grades

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|-

| sub-references

| base 1527; "1527 M" suffix documented on at least three bicolor examples (Drouot case 6920, EveryWatch case 6936, La Cote des Montres) — working hypothesis: M = factory bicolor variant code, not yet primary-confirmed

| base 1527; "1527 M" suffix documented on at least three bicolor examples (Drouot case 6920, EveryWatch case 6936, La Cote des Montres), working hypothesis: M = factory bicolor variant code, not yet primary-confirmed

|-

| materials documented

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|-

| population

| fewer than 15 distinct surveyed auction-house lots in the past three decades — meaningfully rarer than 1490 / 1862; comparable to 971 in stepped bicolor form

| fewer than 15 distinct surveyed auction-house lots in the past three decades, meaningfully rarer than 1490 / 1862; comparable to 971 in stepped bicolor form

|-

| price band (hammer)

| USD 1,912 (Bonhams NY 2006 steel + gold-filled, 1940s) → CHF 5,250 (Sotheby's GE1301 Cooke & Kelvey 18K solid yellow) → USD 8,750 (Christie's NY 2015 18K two-tone) → CHF 27,140 (Antiquorum May 2006 Mondani 18K white + yellow with bamboo bracelet, 1931) — corpus high

| USD 1,912 (Bonhams NY 2006 steel + gold-filled, 1940s) → CHF 5,250 (Sotheby's GE1301 Cooke & Kelvey 18K solid yellow) → USD 8,750 (Christie's NY 2015 18K two-tone) → CHF 27,140 (Antiquorum May 2006 Mondani 18K white + yellow with bamboo bracelet, 1931), corpus high

|}

==Where it sits in the line==

The 1527 sits in the same straight-sided Classic Prince family as the 1862 — neither carries the flared Brancard profile of the 971 or 1490 — but the stepped case treatment is unique to the 1527 within the Prince catalog. The reference launches in 1930 (per the Antiquorum May 2006 Mondani lot 108/33 explicitly dated "Made in 1931," and earlier Antiquorum Vicenza 1992 lot 146 dating one example to 1930) and continues into the 1940s, with the Bonhams NY 2006 lot 15217/9 documented as a 1940s-dated steel + gold-filled example. The auction dates place the reference before the 1935 introduction given in some collector summaries.

The 1527 sits in the same straight-sided Classic Prince family as the 1862, neither carries the flared Brancard profile of the 971 or 1490, but the stepped case treatment is unique to the 1527 within the Prince catalog. The reference launches in 1930 (per the Antiquorum May 2006 Mondani lot 108/33 explicitly dated "Made in 1931," and earlier Antiquorum Vicenza 1992 lot 146 dating one example to 1930) and continues into the 1940s, with the Bonhams NY 2006 lot 15217/9 documented as a 1940s-dated steel + gold-filled example. The auction dates place the reference before the 1935 introduction given in some collector summaries.

The 1527 is contemporary with the 971 / 971A, the 1490, and the 1862. Its stepped sides distinguish it from the other references. The 971A "Tiger Stripe" is a flat-sided Brancard with bicolor gold ridges that read as smooth bands across a continuous case; the 1527 takes that bicolor concept and reorganizes it into a stepped construction where each metal band is a separately-machined piece of solid gold occupying its own physical step. The Watchprosite collector record describes a transitional 971-case variant — "facetted or stepped striped Prince where the two tone gold is separated by ridges rather than being smooth" — that bridges the 971A to the 1527 and resembles aspects of both designs.

The 1527 is contemporary with the 971 / 971A, the 1490, and the 1862. Its stepped sides distinguish it from the other references. The 971A "Tiger Stripe" is a flat-sided Brancard with bicolor gold ridges that read as smooth bands across a continuous case; the 1527 takes that bicolor concept and reorganizes it into a stepped construction where each metal band is a separately-machined piece of solid gold occupying its own physical step. The Watchprosite collector record describes a transitional 971-case variant, "facetted or stepped striped Prince where the two tone gold is separated by ridges rather than being smooth", that bridges the 971A to the 1527 and resembles aspects of both designs.

The 1527's commercial fate is harder to pin down than the 1490's. Friedberg's 2001 Timezone article gives the 1527 a single caption-level sentence; Rolex Magazine's 2017 history mentions the Railway nickname briefly without dating the production end; Hodinkee, Monochrome, Fratello, Worn & Wound, Le Monde Edmond, and the major editorial outlets carry no dedicated 1527 feature. The reference's record runs through auction catalogs almost exclusively — Antiquorum carries the deepest 1527 trail with at least four lots over 1992–2006, and Sotheby's, Christie's, Bonhams, and Artcurial fill out the rest.

The 1527's commercial fate is harder to pin down than the 1490's. Friedberg's 2001 Timezone article gives the 1527 a single caption-level sentence; Rolex Magazine's 2017 history mentions the Railway nickname briefly without dating the production end; Hodinkee, Monochrome, Fratello, Worn & Wound, Le Monde Edmond, and the major editorial outlets carry no dedicated 1527 feature. The reference's record runs through auction catalogs almost exclusively, Antiquorum carries the deepest 1527 trail with at least four lots over 1992–2006, and Sotheby's, Christie's, Bonhams, and Artcurial fill out the rest.

The Prince does not return to the Rolex catalog until the 2005 Cellini Prince revival, which sits on a different platform and is not part of the vintage Prince story this page covers.

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==The Railway nickname==

[[File:Ref 1527 white-pink-1992.webp|thumb|right|240px|alt=Rolex Prince Railway 1527 18ct white and pink gold 1930s|18 ct white + pink gold stepped 1527 with pink gold + stainless steel beads-of-rice bracelet, Antiquorum Vicenza Oro 1992 lot 146 — earliest documented "Prince Railway" catalog naming]]

[[File:Ref 1527 white-pink-1992.webp|thumb|right|240px|alt=Rolex Prince Railway 1527 18ct white and pink gold 1930s|18 ct white + pink gold stepped 1527 with pink gold + stainless steel beads-of-rice bracelet, Antiquorum Vicenza Oro 1992 lot 146, earliest documented "Prince Railway" catalog naming]]

"Railway" is a collector convention. No period Rolex advertisement using the term has surfaced; the earliest catalog use traces to Antiquorum's 1992 Vicenza Oro auction (lot 146), which describes the 1527 as the "Prince Railway" and grounds the nickname in the visual analogy to locomotive forms — the stepped sides reading like the riveted side panels of a 1930s passenger carriage. French-language mirrors render the same nickname as "Chemin de Fer" (literally "iron road"), and Italian collector usage sometimes carries the term as well, but the primary collector convention in English-language auction catalogs is "Railway."

"Railway" is a collector convention. No period Rolex advertisement using the term has surfaced; the earliest catalog use traces to Antiquorum's 1992 Vicenza Oro auction (lot 146), which describes the 1527 as the "Prince Railway" and grounds the nickname in the visual analogy to locomotive forms, the stepped sides reading like the riveted side panels of a 1930s passenger carriage. French-language mirrors render the same nickname as "Chemin de Fer" (literally "iron road"), and Italian collector usage sometimes carries the term as well, but the primary collector convention in English-language auction catalogs is "Railway."

The Robb Report has separately identified a "Gold Jump Hour Railway Prince" as ref. 1571 — a different reference than 1527. The attribution is unverified by other sources and may be a typographical confusion with the 1491HS jumping-hour Brancard. Readers searching for "Railway Prince jumping hour" may land on conflicting reference numbers depending on the source.

The Robb Report has separately identified a "Gold Jump Hour Railway Prince" as ref. 1571, a different reference than 1527. The attribution is unverified by other sources and may be a typographical confusion with the 1491HS jumping-hour Brancard. Readers searching for "Railway Prince jumping hour" may land on conflicting reference numbers depending on the source.

==The case — solid stepped gold==

==The case, solid stepped gold==

The stepped case defines the 1527. Each step is a discrete piece of solid gold machined into the case: the white-gold strip is solid 18K white gold (or 9 ct on Glasgow-imported examples), the pink-gold strip is solid 18K rose, and the steps are joined at the case body with the bicolor pattern integral to the construction. A 1527 case cut in cross-section shows alternating gold colors running solid through the full thickness of the case wall. This is the canonical authentication tell: a stepped Prince whose bicolor sides reveal a base metal under the gold layers in any wear-revealed spot is not a 1527 in any meaningful sense. Modern fakes rely on plating; period-correct construction does not.

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==Materials documented==

[[File:Ref 1527 bamboo-bracelet-1931.webp|thumb|right|260px|alt=Rolex Prince 1527 bamboo bracelet 1931 Mondani|18K white + yellow gold 1527 with original bamboo bracelet, dated 1931 — Antiquorum May 2006 Mondani Collection lot 108/33, hammer CHF 27,140 (corpus high)]]

[[File:Ref 1527 bamboo-bracelet-1931.webp|thumb|right|260px|alt=Rolex Prince 1527 bamboo bracelet 1931 Mondani|18K white + yellow gold 1527 with original bamboo bracelet, dated 1931, Antiquorum May 2006 Mondani Collection lot 108/33, hammer CHF 27,140 (corpus high)]]

The auction record places 1527 examples in the following configurations:

* 18K white + pink gold — the canonical stepped configuration. Most commonly surfaced material. Antiquorum Vicenza 1992 lot 146, Antiquorum Hong Kong 2001 lot 15/434, Bonhams London 2026 lot 25.

* 18K white + pink gold, the canonical stepped configuration. Most commonly surfaced material. Antiquorum Vicenza 1992 lot 146, Antiquorum Hong Kong 2001 lot 15/434, Bonhams London 2026 lot 25.

* 18K white + yellow gold — rarer than white + pink. Antiquorum 2005 Geneva lot 100 and the corpus-high Antiquorum May 2006 Mondani lot 108/33 (1931, with bamboo bracelet, hammer CHF 27,140).

* 18K white + yellow gold, rarer than white + pink. Antiquorum 2005 Geneva lot 100 and the corpus-high Antiquorum May 2006 Mondani lot 108/33 (1931, with bamboo bracelet, hammer CHF 27,140).

* Solid 18K yellow gold (monochrome) — Sotheby's GE1301 2013 lot 87 (Cooke & Kelvey Calcutta double-signed) and Artcurial Monte-Carlo 2017 lot M1017/145 (Arman Collection, hammer EUR 2,860). The monochrome examples retain the stepped case profile but lose the bicolor visual signature.

* Solid 18K yellow gold (monochrome), Sotheby's GE1301 2013 lot 87 (Cooke & Kelvey Calcutta double-signed) and Artcurial Monte-Carlo 2017 lot M1017/145 (Arman Collection, hammer EUR 2,860). The monochrome examples retain the stepped case profile but lose the bicolor visual signature.

* 18K two-tone (unspecified pairing) — Christie's NY 2015 lot 28 (hammer USD 8,750), Bonhams London 2026 lot 29.

* 18K two-tone (unspecified pairing), Christie's NY 2015 lot 28 (hammer USD 8,750), Bonhams London 2026 lot 29.

* 9K bicolor — Sotheby's NY 2019 sale N10082 lot 169. Glasgow imports use 9K rather than 18K and carry the British assay-office year-letter hallmark on the inside of the caseback.

* 9K bicolor, Sotheby's NY 2019 sale N10082 lot 169. Glasgow imports use 9K rather than 18K and carry the British assay-office year-letter hallmark on the inside of the caseback.

* Steel + gold-filled — Bonhams NY 2006 sale 15217 lot 9, the late-production anchor at 1940s, hammer USD 1,912. The most affordable 1527 configuration; the gold-filled construction gives the stepped case a similar visual at a fraction of the precious-metal cost.

* Steel + gold-filled, Bonhams NY 2006 sale 15217 lot 9, the late-production anchor at 1940s, hammer USD 1,912. The most affordable 1527 configuration; the gold-filled construction gives the stepped case a similar visual at a fraction of the precious-metal cost.

* Stainless steel — Sotheby's NY 2008 Time Museum auction (sale N08474), single documented example. The rarest material on a 1527.

* Stainless steel, Sotheby's NY 2008 Time Museum auction (sale N08474), single documented example. The rarest material on a 1527.

No platinum 1527 is documented in the auction record (unlike the 971, which has at least four documented platinum examples). The all-pink-and-yellow-gold pairing without white is also undocumented; the white-gold band is integral to the canonical Railway treatment.

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==The movement==

[[File:Ref 1527 movement.webp|thumb|right|240px|alt=Rolex Prince 1527 movement bridge stamped Rolex Chronometer Timed 6 Positions 18 rubies|1527 movement, bridge stamped "ROLEX CHRONOMETER TIMED 6 POSITIONS," 18 rubies — Antiquorum Monaco, 16 July 2019, lot 173 (case no. 49767)]]

[[File:Ref 1527 movement.webp|thumb|right|240px|alt=Rolex Prince 1527 movement bridge stamped Rolex Chronometer Timed 6 Positions 18 rubies|1527 movement, bridge stamped "ROLEX CHRONOMETER TIMED 6 POSITIONS," 18 rubies, Antiquorum Monaco, 16 July 2019, lot 173 (case no. 49767)]]

The 1527 runs on the same Aegler 7½′′′ T.S. 300 family that powers the upper-tier 1490 and 971 examples. Cal. 350 — the standard 1490 caliber — does not appear on 1527 cases in the auction record; the 1527 is consistently catalogued with the T.S. 300 designation. Movement grading divides into Extra Prima (the dominant grade, 17 jewels, 6-position adjustment, "Chronometer" dial designation) and Ultra Prima (rarer on 1527, 18 jewels, 8-position adjustment marketed as "Officially Tested in Eight Ways," "Officially Certified Chronometer" or "Observatory Quality" dial designations).

The 1527 runs on the same Aegler 7½′′′ T.S. 300 family that powers the upper-tier 1490 and 971 examples. Cal. 350, the standard 1490 caliber, does not appear on 1527 cases in the auction record; the 1527 is consistently catalogued with the T.S. 300 designation. Movement grading divides into Extra Prima (the dominant grade, 17 jewels, 6-position adjustment, "Chronometer" dial designation) and Ultra Prima (rarer on 1527, 18 jewels, 8-position adjustment marketed as "Officially Tested in Eight Ways," "Officially Certified Chronometer" or "Observatory Quality" dial designations).

Extra Prima is more common than Ultra Prima on both the 1490 and the 1527. Fewer Ultra Prima 1527s are documented, in keeping with the smaller number of 1527 examples overall. The stepped case also appears with an Ultra Prima 8-position movement; the Antiquorum 2006 Mondani Bamboo bracelet 1527 (1931, hammer CHF 27,140) is the canonical reference example.

The 1927 Wilsdorf-Aegler shaped-movement patent applies. The Aegler-Rolex relationship was a supplier arrangement until Rolex purchased Aegler in April 2004 (Tim Mosso, Quill & Pad). The cal. 300 winding-stem bridge fail-point applies to 1527 movements as it does to all Prince calibers — a 1527 that sets time then disengages immediately is a textbook broken stem bridge — a known, serviceable fault.

The 1927 Wilsdorf-Aegler shaped-movement patent applies. The Aegler-Rolex relationship was a supplier arrangement until Rolex purchased Aegler in April 2004 (Tim Mosso, Quill & Pad). The cal. 300 winding-stem bridge fail-point applies to 1527 movements as it does to all Prince calibers, a 1527 that sets time then disengages immediately is a textbook broken stem bridge, a known, serviceable fault.

The closest authentication mistake to be aware of is the Cal. 360 Prince Elegant case-mistake — the NAWCC thread "Cal 300 vs Cal 360 Prince Elegant" documents collectors confusing the cal. 360 HW (which carries tonneau plates) for a Prince movement when it actually appears in the Prince Elegant 2771 case rather than the standard Prince family. A 1527 with a tonneau-plate movement under the dial is not impossible but warrants careful verification against the reference's expected rectangular-plate T.S. 300 architecture.

The closest authentication mistake to be aware of is the Cal. 360 Prince Elegant case-mistake, the NAWCC thread "Cal 300 vs Cal 360 Prince Elegant" documents collectors confusing the cal. 360 HW (which carries tonneau plates) for a Prince movement when it actually appears in the Prince Elegant 2771 case rather than the standard Prince family. A 1527 with a tonneau-plate movement under the dial is not impossible but warrants careful verification against the reference's expected rectangular-plate T.S. 300 architecture.

==Dial layout==

[[File:Ref 1527 dial.webp|thumb|right|240px|alt=Rolex Prince 1527 silvered duo-dial Rolex Prince Chronometre sub-seconds at six|1527 dial removed from the case, silvered duo-dial reading "ROLEX PRINCE" / "CHRONOMETRE," sub-seconds at six — Antiquorum Monaco, 16 July 2019, lot 173 (case no. 49767)]]

[[File:Ref 1527 dial.webp|thumb|right|240px|alt=Rolex Prince 1527 silvered duo-dial Rolex Prince Chronometre sub-seconds at six|1527 dial removed from the case, silvered duo-dial reading "ROLEX PRINCE" / "CHRONOMETRE," sub-seconds at six, Antiquorum Monaco, 16 July 2019, lot 173 (case no. 49767)]]

The 1527 carries the standard Prince duo-dial: hours and minutes in the upper register with the typical hour numerals and minute track, sub-seconds at six. Documented dial configurations:

* Silvered duo-dial with painted Arabic numerals and "ROLEX PRINCE" + "CHRONOMETER" or "Officially Certified Chronometer" or "Observatory Quality" text — the standard configuration on Extra Prima and Ultra Prima examples respectively.

* Silvered duo-dial with painted Arabic numerals and "ROLEX PRINCE" + "CHRONOMETER" or "Officially Certified Chronometer" or "Observatory Quality" text, the standard configuration on Extra Prima and Ultra Prima examples respectively.

* Silvered duo-dial with applied baton hour markers — appears on dressier 18K solid-gold examples.

* Silvered duo-dial with applied baton hour markers, appears on dressier 18K solid-gold examples.

* Cooke & Kelvey Calcutta retailer-double-signed dial — Sotheby's GE1301 2013 lot 87, the only documented retailer double on a 1527. The Cooke & Kelvey relationship places the 1527 in the British colonial retail circuit alongside the 1490 examples that carry similar Calcutta provenance.

* Cooke & Kelvey Calcutta retailer-double-signed dial, Sotheby's GE1301 2013 lot 87, the only documented retailer double on a 1527. The Cooke & Kelvey relationship places the 1527 in the British colonial retail circuit alongside the 1490 examples that carry similar Calcutta provenance.

* Eight-position-adjusted "Officially Tested in Eight Ways" dial designation — Ultra Prima examples carry this text in place of the standard "Chronometer."

* Eight-position-adjusted "Officially Tested in Eight Ways" dial designation, Ultra Prima examples carry this text in place of the standard "Chronometer."

* No Bucherer / Beyer / Eaton 1/4 Century 1527 has surfaced — the retailer programs that bracketed the 1490 and 971 do not extend to the 1527 in the documented record. The Cooke & Kelvey example is the lone retailer-program example.

* No Bucherer / Beyer / Eaton 1/4 Century 1527 has surfaced, the retailer programs that bracketed the 1490 and 971 do not extend to the 1527 in the documented record. The Cooke & Kelvey example is the lone retailer-program example.

Hand styles cluster on blued steel dauphine and blued Breguet variants, with the sub-seconds hand consistently blued steel. Refinished sub-seconds hands are the standard service intervention.

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| Antiquorum HK (lot 15/434)

| 18K white + pink

| —

|,

|-

| 2005

| Antiquorum Geneva (lot 100/1)

| 18K white + yellow

| —

|,

|-

| 2006

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| Sotheby's NY Time Museum (N08474)

| stainless steel (only documented stainless)

| —

|,

|-

| 2013

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|}

The hammer band runs from USD 1,912 (steel + gold-filled, the 1940s budget configuration) to CHF 27,140 (Mondani 1931 white + yellow with bamboo bracelet, the corpus high). The bicolor 18K configurations sit in the GBP 5,000–9,000 range when sold in plain catalog form, rising sharply with provenance, original bracelet, or documented Mondani-tier provenance. The Cooke & Kelvey example at CHF 5,250 sits at the lower end of solid-gold configurations because the Cooke & Kelvey signing premium does not match the Bucherer or Beyer signing premium on the 1490 — the Calcutta retailer relationship is documented but smaller in market influence than the Swiss equivalents. Phillips carries no documented 1527 lots in their public archive — the reference's auction representation runs through Antiquorum, Bonhams, Sotheby's, and Christie's.

The hammer band runs from USD 1,912 (steel + gold-filled, the 1940s budget configuration) to CHF 27,140 (Mondani 1931 white + yellow with bamboo bracelet, the corpus high). The bicolor 18K configurations sit in the GBP 5,000–9,000 range when sold in plain catalog form, rising sharply with provenance, original bracelet, or documented Mondani-tier provenance. The Cooke & Kelvey example at CHF 5,250 sits at the lower end of solid-gold configurations because the Cooke & Kelvey signing premium does not match the Bucherer or Beyer signing premium on the 1490, the Calcutta retailer relationship is documented but smaller in market influence than the Swiss equivalents. Phillips carries no documented 1527 lots in their public archive, the reference's auction representation runs through Antiquorum, Bonhams, Sotheby's, and Christie's.

== Related references ==

* [[Reference:1491|Prince 1491]] — 1930–1945

* [[Reference:1491|Prince 1491]], 1930–1945

* [[Reference:1490|Prince 1490]] — 1928–1945

* [[Reference:1490|Prince 1490]], 1928–1945

* [[Reference:1862|Prince 1862]] — 1928–1942

* [[Reference:1862|Prince 1862]], 1928–1942

* [[Reference:971|Prince 971]] — Brancard Art-Deco (1928–1938)

* [[Reference:971|Prince 971]], Brancard Art-Deco (1928–1938)

* [[Reference:1343|Prince 1343]] — Classic Rectangular (1928–1935)

* [[Reference:1343|Prince 1343]], Classic Rectangular (1928–1935)

* [[Reference:3361|Prince 3361]]

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* "Rolex Prince Railway 1527 — Earliest Catalog Naming", Antiquorum, 1992

* "Rolex Prince Railway 1527, Earliest Catalog Naming", Antiquorum, 1992

* "Rolex Prince 1527 18K White + Yellow with Bamboo Bracelet — Mondani Collection 1931", Antiquorum, 2006-05

* "Rolex Prince 1527 18K White + Yellow with Bamboo Bracelet, Mondani Collection 1931", Antiquorum, 2006-05

* "Rolex Prince Railway 1527 18K White + Yellow Gold", Antiquorum, 2005

* "Rolex Prince Railway 1527 18K White + Pink", Antiquorum, 2001

* "Rolex Prince 1527 9K Two-Tone", Sotheby's, 2019

* "Rolex Prince 1527 Stainless Steel — Time Museum", Sotheby's, 2008

* "Rolex Prince 1527 Stainless Steel, Time Museum", Sotheby's, 2008

* "Rolex Prince 1527 18K Yellow Cooke & Kelvey Calcutta", Sotheby's, 2013

* "Rolex Prince 1527 18K Two-Tone", Christie's, 2015

* "Rolex Prince 1527 18K White + Pink", Bonhams, 2026

* "Rolex Prince 1527 Two-Color 18K", Bonhams, 2026

* "Rolex Prince 1527 Steel + Gold-Filled — 1940s Production Anchor", Bonhams, 2006

* "Rolex Prince 1527 Steel + Gold-Filled, 1940s Production Anchor", Bonhams, 2006

* "Rolex Prince 1527 18K Yellow — Arman Collection", Artcurial, 2017

* "Rolex Prince 1527 18K Yellow, Arman Collection", Artcurial, 2017

* "Watch-guy.com on the 1527 Railway — 'the only rectangular Prince worth having'", Watchprosite, 2011

* "Watch-guy.com on the 1527 Railway, 'the only rectangular Prince worth having'", Watchprosite, 2011

* "Rolex Prince 1527 M White + Pink Stepped — Case 6920", Drouot

* "Rolex Prince 1527 M White + Pink Stepped, Case 6920", Drouot

* [https://www.rolexmagazine.com/2017/05/the-complete-history-of-rolex-prince.html Jake Ehrlich, "The Complete History of the Rolex Prince", Rolex Magazine, 2017-05]

* [https://quillandpad.com/2019/04/09/the-golden-age-of-rolex-movements-part-i-sowing-the-seeds-of-greatness/ Tim Mosso, "The Golden Age of Rolex Movements Part I", Quill & Pad, 2019-04-09]

@@ Line 1: / Line 1: @@
 {{DISPLAYTITLE:Rolex 1527}}
 {{#seo:
-|title=Rolex 1527 (1930–1945) — Production & Dial Guide &#124; Rolexopedia
+|title=Rolex 1527 (1930–1945), Production & Dial Guide &#124; Rolexopedia
-|description=The Rolex Prince Railway 1527 is the stepped Art-Deco bicolor Prince — solid stepped gold construction (white + pink gold canonical, white + yellow rare), 1930 launch into the 1940s, Aegler 7½′′′ T.S. 300 in Extra Prima or Ultra Prima grade. Population fewer than 15 documented auction lots in three decades. Watch-guy.com calls it "the only rectangular Prince worth having."
+|description=The Rolex Prince Railway 1527 is the stepped Art-Deco bicolor Prince, solid stepped gold construction (white + pink gold canonical, white + yellow rare), 1930 launch into the 1940s, Aegler 7½′′′ T.S. 300 in Extra Prima or Ultra Prima grade. Population fewer than 15 documented auction lots in three decades. Watch-guy.com calls it "the only rectangular Prince worth having."
 |keywords=Rolex, Prince, 1527, 1527 M, Railway, Chemin de Fer, stepped, Art Deco, Aegler, T.S. 300, Ultra Prima, Extra Prima, vintage, bicolor, Mondani, reference guide
 |image=Ref 1527 hero.webp
@@ Line 19: / Line 19: @@
 </div>
-The 1527 is the Railway Prince. The case steps inward from the lugs in machined bands of solid gold, alternating white with pink (the canonical pairing) or white with yellow on rarer examples, producing a profile that read in the late 1920s and 1930s as obviously locomotive-inspired Art Deco. Each step is a discrete piece of solid 18K gold machined into the case itself, which makes the construction structurally distinct from the smooth bicolor 971A "Tiger Stripe" and visually distinct from every other Prince reference. The duo-dial layout is the standard Prince architecture — hours and minutes upper, sub-seconds at six — and the movement is the Aegler 7½′′′ T.S. 300 in Extra Prima or Ultra Prima grade. Production runs from a documented 1931 Mondani example into the 1940s, with a steel + gold-filled Bonhams 2006 lot anchoring the late-production end. The reference appears rarely at auction — fewer than fifteen distinct lots in the public auction record across the past three decades, comparable to the 971 in stepped-bicolor form rather than to the more common 1490. The collector watchmaker watch-guy.com calls it "the only rectangular Prince worth having."
+The 1527 is the Railway Prince. The case steps inward from the lugs in machined bands of solid gold, alternating white with pink (the canonical pairing) or white with yellow on rarer examples, producing a profile that read in the late 1920s and 1930s as obviously locomotive-inspired Art Deco. Each step is a discrete piece of solid 18K gold machined into the case itself, which makes the construction structurally distinct from the smooth bicolor 971A "Tiger Stripe" and visually distinct from every other Prince reference. The duo-dial layout is the standard Prince architecture, hours and minutes upper, sub-seconds at six, and the movement is the Aegler 7½′′′ T.S. 300 in Extra Prima or Ultra Prima grade. Production runs from a documented 1931 Mondani example into the 1940s, with a steel + gold-filled Bonhams 2006 lot anchoring the late-production end. The reference appears rarely at auction, fewer than fifteen distinct lots in the public auction record across the past three decades, comparable to the 971 in stepped-bicolor form rather than to the more common 1490. The collector watchmaker watch-guy.com calls it "the only rectangular Prince worth having."
@@ Line 30: / Line 30: @@
 |-
 | reference
-| 1527 (and "1527 M" sub-designation on some bicolor examples — M suffix unexplained in primary documentation)
+| 1527 (and "1527 M" sub-designation on some bicolor examples, M suffix unexplained in primary documentation)
 |-
 | family
@@ Line 39: / Line 39: @@
 |-
 | case shape
-| rectangular Classic, stepped sides — each step a discrete machined band of solid gold (or 9ct on Glasgow imports)
+| rectangular Classic, stepped sides, each step a discrete machined band of solid gold (or 9ct on Glasgow imports)
 |-
 | case dimensions
@@ Line 57: / Line 57: @@
 |-
 | movement
-| Aegler 7½′′′ T.S. 300 — the same T.S. 300 family deployed in 1490 Ultra Prima examples
+| Aegler 7½′′′ T.S. 300, the same T.S. 300 family deployed in 1490 Ultra Prima examples
 |-
 | movement grades
@@ Line 75: / Line 75: @@
 |-
 | sub-references
-| base 1527; "1527 M" suffix documented on at least three bicolor examples (Drouot case 6920, EveryWatch case 6936, La Cote des Montres) — working hypothesis: M = factory bicolor variant code, not yet primary-confirmed
+| base 1527; "1527 M" suffix documented on at least three bicolor examples (Drouot case 6920, EveryWatch case 6936, La Cote des Montres), working hypothesis: M = factory bicolor variant code, not yet primary-confirmed
 |-
 | materials documented
@@ Line 81: / Line 81: @@
 |-
 | population
-| fewer than 15 distinct surveyed auction-house lots in the past three decades — meaningfully rarer than 1490 / 1862; comparable to 971 in stepped bicolor form
+| fewer than 15 distinct surveyed auction-house lots in the past three decades, meaningfully rarer than 1490 / 1862; comparable to 971 in stepped bicolor form
 |-
 | price band (hammer)
-| USD 1,912 (Bonhams NY 2006 steel + gold-filled, 1940s) → CHF 5,250 (Sotheby's GE1301 Cooke & Kelvey 18K solid yellow) → USD 8,750 (Christie's NY 2015 18K two-tone) → CHF 27,140 (Antiquorum May 2006 Mondani 18K white + yellow with bamboo bracelet, 1931) — corpus high
+| USD 1,912 (Bonhams NY 2006 steel + gold-filled, 1940s) → CHF 5,250 (Sotheby's GE1301 Cooke & Kelvey 18K solid yellow) → USD 8,750 (Christie's NY 2015 18K two-tone) → CHF 27,140 (Antiquorum May 2006 Mondani 18K white + yellow with bamboo bracelet, 1931), corpus high
 |}
 ==Where it sits in the line==
-The 1527 sits in the same straight-sided Classic Prince family as the 1862 — neither carries the flared Brancard profile of the 971 or 1490 — but the stepped case treatment is unique to the 1527 within the Prince catalog. The reference launches in 1930 (per the Antiquorum May 2006 Mondani lot 108/33 explicitly dated "Made in 1931," and earlier Antiquorum Vicenza 1992 lot 146 dating one example to 1930) and continues into the 1940s, with the Bonhams NY 2006 lot 15217/9 documented as a 1940s-dated steel + gold-filled example. The auction dates place the reference before the 1935 introduction given in some collector summaries.
+The 1527 sits in the same straight-sided Classic Prince family as the 1862, neither carries the flared Brancard profile of the 971 or 1490, but the stepped case treatment is unique to the 1527 within the Prince catalog. The reference launches in 1930 (per the Antiquorum May 2006 Mondani lot 108/33 explicitly dated "Made in 1931," and earlier Antiquorum Vicenza 1992 lot 146 dating one example to 1930) and continues into the 1940s, with the Bonhams NY 2006 lot 15217/9 documented as a 1940s-dated steel + gold-filled example. The auction dates place the reference before the 1935 introduction given in some collector summaries.
-The 1527 is contemporary with the 971 / 971A, the 1490, and the 1862. Its stepped sides distinguish it from the other references. The 971A "Tiger Stripe" is a flat-sided Brancard with bicolor gold ridges that read as smooth bands across a continuous case; the 1527 takes that bicolor concept and reorganizes it into a stepped construction where each metal band is a separately-machined piece of solid gold occupying its own physical step. The Watchprosite collector record describes a transitional 971-case variant — "facetted or stepped striped Prince where the two tone gold is separated by ridges rather than being smooth" — that bridges the 971A to the 1527 and resembles aspects of both designs.
+The 1527 is contemporary with the 971 / 971A, the 1490, and the 1862. Its stepped sides distinguish it from the other references. The 971A "Tiger Stripe" is a flat-sided Brancard with bicolor gold ridges that read as smooth bands across a continuous case; the 1527 takes that bicolor concept and reorganizes it into a stepped construction where each metal band is a separately-machined piece of solid gold occupying its own physical step. The Watchprosite collector record describes a transitional 971-case variant, "facetted or stepped striped Prince where the two tone gold is separated by ridges rather than being smooth", that bridges the 971A to the 1527 and resembles aspects of both designs.
-The 1527's commercial fate is harder to pin down than the 1490's. Friedberg's 2001 Timezone article gives the 1527 a single caption-level sentence; Rolex Magazine's 2017 history mentions the Railway nickname briefly without dating the production end; Hodinkee, Monochrome, Fratello, Worn & Wound, Le Monde Edmond, and the major editorial outlets carry no dedicated 1527 feature. The reference's record runs through auction catalogs almost exclusively — Antiquorum carries the deepest 1527 trail with at least four lots over 1992–2006, and Sotheby's, Christie's, Bonhams, and Artcurial fill out the rest.
+The 1527's commercial fate is harder to pin down than the 1490's. Friedberg's 2001 Timezone article gives the 1527 a single caption-level sentence; Rolex Magazine's 2017 history mentions the Railway nickname briefly without dating the production end; Hodinkee, Monochrome, Fratello, Worn & Wound, Le Monde Edmond, and the major editorial outlets carry no dedicated 1527 feature. The reference's record runs through auction catalogs almost exclusively, Antiquorum carries the deepest 1527 trail with at least four lots over 1992–2006, and Sotheby's, Christie's, Bonhams, and Artcurial fill out the rest.
 The Prince does not return to the Rolex catalog until the 2005 Cellini Prince revival, which sits on a different platform and is not part of the vintage Prince story this page covers.
@@ Line 99: / Line 99: @@
 ==The Railway nickname==
-[[File:Ref 1527 white-pink-1992.webp|thumb|right|240px|alt=Rolex Prince Railway 1527 18ct white and pink gold 1930s|18 ct white + pink gold stepped 1527 with pink gold + stainless steel beads-of-rice bracelet, Antiquorum Vicenza Oro 1992 lot 146 — earliest documented "Prince Railway" catalog naming]]
+[[File:Ref 1527 white-pink-1992.webp|thumb|right|240px|alt=Rolex Prince Railway 1527 18ct white and pink gold 1930s|18 ct white + pink gold stepped 1527 with pink gold + stainless steel beads-of-rice bracelet, Antiquorum Vicenza Oro 1992 lot 146, earliest documented "Prince Railway" catalog naming]]
-"Railway" is a collector convention. No period Rolex advertisement using the term has surfaced; the earliest catalog use traces to Antiquorum's 1992 Vicenza Oro auction (lot 146), which describes the 1527 as the "Prince Railway" and grounds the nickname in the visual analogy to locomotive forms — the stepped sides reading like the riveted side panels of a 1930s passenger carriage. French-language mirrors render the same nickname as "Chemin de Fer" (literally "iron road"), and Italian collector usage sometimes carries the term as well, but the primary collector convention in English-language auction catalogs is "Railway."
+"Railway" is a collector convention. No period Rolex advertisement using the term has surfaced; the earliest catalog use traces to Antiquorum's 1992 Vicenza Oro auction (lot 146), which describes the 1527 as the "Prince Railway" and grounds the nickname in the visual analogy to locomotive forms, the stepped sides reading like the riveted side panels of a 1930s passenger carriage. French-language mirrors render the same nickname as "Chemin de Fer" (literally "iron road"), and Italian collector usage sometimes carries the term as well, but the primary collector convention in English-language auction catalogs is "Railway."
-The Robb Report has separately identified a "Gold Jump Hour Railway Prince" as ref. 1571 — a different reference than 1527. The attribution is unverified by other sources and may be a typographical confusion with the 1491HS jumping-hour Brancard. Readers searching for "Railway Prince jumping hour" may land on conflicting reference numbers depending on the source.
+The Robb Report has separately identified a "Gold Jump Hour Railway Prince" as ref. 1571, a different reference than 1527. The attribution is unverified by other sources and may be a typographical confusion with the 1491HS jumping-hour Brancard. Readers searching for "Railway Prince jumping hour" may land on conflicting reference numbers depending on the source.
-==The case — solid stepped gold==
+==The case, solid stepped gold==
 The stepped case defines the 1527. Each step is a discrete piece of solid gold machined into the case: the white-gold strip is solid 18K white gold (or 9 ct on Glasgow-imported examples), the pink-gold strip is solid 18K rose, and the steps are joined at the case body with the bicolor pattern integral to the construction. A 1527 case cut in cross-section shows alternating gold colors running solid through the full thickness of the case wall. This is the canonical authentication tell: a stepped Prince whose bicolor sides reveal a base metal under the gold layers in any wear-revealed spot is not a 1527 in any meaningful sense. Modern fakes rely on plating; period-correct construction does not.
@@ Line 112: / Line 112: @@
 ==Materials documented==
-[[File:Ref 1527 bamboo-bracelet-1931.webp|thumb|right|260px|alt=Rolex Prince 1527 bamboo bracelet 1931 Mondani|18K white + yellow gold 1527 with original bamboo bracelet, dated 1931 — Antiquorum May 2006 Mondani Collection lot 108/33, hammer CHF 27,140 (corpus high)]]
+[[File:Ref 1527 bamboo-bracelet-1931.webp|thumb|right|260px|alt=Rolex Prince 1527 bamboo bracelet 1931 Mondani|18K white + yellow gold 1527 with original bamboo bracelet, dated 1931, Antiquorum May 2006 Mondani Collection lot 108/33, hammer CHF 27,140 (corpus high)]]
 The auction record places 1527 examples in the following configurations:
-* 18K white + pink gold — the canonical stepped configuration. Most commonly surfaced material. Antiquorum Vicenza 1992 lot 146, Antiquorum Hong Kong 2001 lot 15/434, Bonhams London 2026 lot 25.
+* 18K white + pink gold, the canonical stepped configuration. Most commonly surfaced material. Antiquorum Vicenza 1992 lot 146, Antiquorum Hong Kong 2001 lot 15/434, Bonhams London 2026 lot 25.
-* 18K white + yellow gold — rarer than white + pink. Antiquorum 2005 Geneva lot 100 and the corpus-high Antiquorum May 2006 Mondani lot 108/33 (1931, with bamboo bracelet, hammer CHF 27,140).
+* 18K white + yellow gold, rarer than white + pink. Antiquorum 2005 Geneva lot 100 and the corpus-high Antiquorum May 2006 Mondani lot 108/33 (1931, with bamboo bracelet, hammer CHF 27,140).
-* Solid 18K yellow gold (monochrome) — Sotheby's GE1301 2013 lot 87 (Cooke & Kelvey Calcutta double-signed) and Artcurial Monte-Carlo 2017 lot M1017/145 (Arman Collection, hammer EUR 2,860). The monochrome examples retain the stepped case profile but lose the bicolor visual signature.
+* Solid 18K yellow gold (monochrome), Sotheby's GE1301 2013 lot 87 (Cooke & Kelvey Calcutta double-signed) and Artcurial Monte-Carlo 2017 lot M1017/145 (Arman Collection, hammer EUR 2,860). The monochrome examples retain the stepped case profile but lose the bicolor visual signature.
-* 18K two-tone (unspecified pairing) — Christie's NY 2015 lot 28 (hammer USD 8,750), Bonhams London 2026 lot 29.
+* 18K two-tone (unspecified pairing), Christie's NY 2015 lot 28 (hammer USD 8,750), Bonhams London 2026 lot 29.
-* 9K bicolor — Sotheby's NY 2019 sale N10082 lot 169. Glasgow imports use 9K rather than 18K and carry the British assay-office year-letter hallmark on the inside of the caseback.
+* 9K bicolor, Sotheby's NY 2019 sale N10082 lot 169. Glasgow imports use 9K rather than 18K and carry the British assay-office year-letter hallmark on the inside of the caseback.
-* Steel + gold-filled — Bonhams NY 2006 sale 15217 lot 9, the late-production anchor at 1940s, hammer USD 1,912. The most affordable 1527 configuration; the gold-filled construction gives the stepped case a similar visual at a fraction of the precious-metal cost.
+* Steel + gold-filled, Bonhams NY 2006 sale 15217 lot 9, the late-production anchor at 1940s, hammer USD 1,912. The most affordable 1527 configuration; the gold-filled construction gives the stepped case a similar visual at a fraction of the precious-metal cost.
-* Stainless steel — Sotheby's NY 2008 Time Museum auction (sale N08474), single documented example. The rarest material on a 1527.
+* Stainless steel, Sotheby's NY 2008 Time Museum auction (sale N08474), single documented example. The rarest material on a 1527.
 No platinum 1527 is documented in the auction record (unlike the 971, which has at least four documented platinum examples). The all-pink-and-yellow-gold pairing without white is also undocumented; the white-gold band is integral to the canonical Railway treatment.
@@ Line 127: / Line 127: @@
 ==The movement==
-[[File:Ref 1527 movement.webp|thumb|right|240px|alt=Rolex Prince 1527 movement bridge stamped Rolex Chronometer Timed 6 Positions 18 rubies|1527 movement, bridge stamped "ROLEX CHRONOMETER TIMED 6 POSITIONS," 18 rubies — Antiquorum Monaco, 16 July 2019, lot 173 (case no. 49767)]]
+[[File:Ref 1527 movement.webp|thumb|right|240px|alt=Rolex Prince 1527 movement bridge stamped Rolex Chronometer Timed 6 Positions 18 rubies|1527 movement, bridge stamped "ROLEX CHRONOMETER TIMED 6 POSITIONS," 18 rubies, Antiquorum Monaco, 16 July 2019, lot 173 (case no. 49767)]]
-The 1527 runs on the same Aegler 7½′′′ T.S. 300 family that powers the upper-tier 1490 and 971 examples. Cal. 350 — the standard 1490 caliber — does not appear on 1527 cases in the auction record; the 1527 is consistently catalogued with the T.S. 300 designation. Movement grading divides into Extra Prima (the dominant grade, 17 jewels, 6-position adjustment, "Chronometer" dial designation) and Ultra Prima (rarer on 1527, 18 jewels, 8-position adjustment marketed as "Officially Tested in Eight Ways," "Officially Certified Chronometer" or "Observatory Quality" dial designations).
+The 1527 runs on the same Aegler 7½′′′ T.S. 300 family that powers the upper-tier 1490 and 971 examples. Cal. 350, the standard 1490 caliber, does not appear on 1527 cases in the auction record; the 1527 is consistently catalogued with the T.S. 300 designation. Movement grading divides into Extra Prima (the dominant grade, 17 jewels, 6-position adjustment, "Chronometer" dial designation) and Ultra Prima (rarer on 1527, 18 jewels, 8-position adjustment marketed as "Officially Tested in Eight Ways," "Officially Certified Chronometer" or "Observatory Quality" dial designations).
 Extra Prima is more common than Ultra Prima on both the 1490 and the 1527. Fewer Ultra Prima 1527s are documented, in keeping with the smaller number of 1527 examples overall. The stepped case also appears with an Ultra Prima 8-position movement; the Antiquorum 2006 Mondani Bamboo bracelet 1527 (1931, hammer CHF 27,140) is the canonical reference example.
-The 1927 Wilsdorf-Aegler shaped-movement patent applies. The Aegler-Rolex relationship was a supplier arrangement until Rolex purchased Aegler in April 2004 (Tim Mosso, Quill & Pad). The cal. 300 winding-stem bridge fail-point applies to 1527 movements as it does to all Prince calibers — a 1527 that sets time then disengages immediately is a textbook broken stem bridge — a known, serviceable fault.
+The 1927 Wilsdorf-Aegler shaped-movement patent applies. The Aegler-Rolex relationship was a supplier arrangement until Rolex purchased Aegler in April 2004 (Tim Mosso, Quill & Pad). The cal. 300 winding-stem bridge fail-point applies to 1527 movements as it does to all Prince calibers, a 1527 that sets time then disengages immediately is a textbook broken stem bridge, a known, serviceable fault.
-The closest authentication mistake to be aware of is the Cal. 360 Prince Elegant case-mistake — the NAWCC thread "Cal 300 vs Cal 360 Prince Elegant" documents collectors confusing the cal. 360 HW (which carries tonneau plates) for a Prince movement when it actually appears in the Prince Elegant 2771 case rather than the standard Prince family. A 1527 with a tonneau-plate movement under the dial is not impossible but warrants careful verification against the reference's expected rectangular-plate T.S. 300 architecture.
+The closest authentication mistake to be aware of is the Cal. 360 Prince Elegant case-mistake, the NAWCC thread "Cal 300 vs Cal 360 Prince Elegant" documents collectors confusing the cal. 360 HW (which carries tonneau plates) for a Prince movement when it actually appears in the Prince Elegant 2771 case rather than the standard Prince family. A 1527 with a tonneau-plate movement under the dial is not impossible but warrants careful verification against the reference's expected rectangular-plate T.S. 300 architecture.
 ==Dial layout==
-[[File:Ref 1527 dial.webp|thumb|right|240px|alt=Rolex Prince 1527 silvered duo-dial Rolex Prince Chronometre sub-seconds at six|1527 dial removed from the case, silvered duo-dial reading "ROLEX PRINCE" / "CHRONOMETRE," sub-seconds at six — Antiquorum Monaco, 16 July 2019, lot 173 (case no. 49767)]]
+[[File:Ref 1527 dial.webp|thumb|right|240px|alt=Rolex Prince 1527 silvered duo-dial Rolex Prince Chronometre sub-seconds at six|1527 dial removed from the case, silvered duo-dial reading "ROLEX PRINCE" / "CHRONOMETRE," sub-seconds at six, Antiquorum Monaco, 16 July 2019, lot 173 (case no. 49767)]]
 The 1527 carries the standard Prince duo-dial: hours and minutes in the upper register with the typical hour numerals and minute track, sub-seconds at six. Documented dial configurations:
-* Silvered duo-dial with painted Arabic numerals and "ROLEX PRINCE" + "CHRONOMETER" or "Officially Certified Chronometer" or "Observatory Quality" text — the standard configuration on Extra Prima and Ultra Prima examples respectively.
+* Silvered duo-dial with painted Arabic numerals and "ROLEX PRINCE" + "CHRONOMETER" or "Officially Certified Chronometer" or "Observatory Quality" text, the standard configuration on Extra Prima and Ultra Prima examples respectively.
-* Silvered duo-dial with applied baton hour markers — appears on dressier 18K solid-gold examples.
+* Silvered duo-dial with applied baton hour markers, appears on dressier 18K solid-gold examples.
-* Cooke & Kelvey Calcutta retailer-double-signed dial — Sotheby's GE1301 2013 lot 87, the only documented retailer double on a 1527. The Cooke & Kelvey relationship places the 1527 in the British colonial retail circuit alongside the 1490 examples that carry similar Calcutta provenance.
+* Cooke & Kelvey Calcutta retailer-double-signed dial, Sotheby's GE1301 2013 lot 87, the only documented retailer double on a 1527. The Cooke & Kelvey relationship places the 1527 in the British colonial retail circuit alongside the 1490 examples that carry similar Calcutta provenance.
-* Eight-position-adjusted "Officially Tested in Eight Ways" dial designation — Ultra Prima examples carry this text in place of the standard "Chronometer."
+* Eight-position-adjusted "Officially Tested in Eight Ways" dial designation, Ultra Prima examples carry this text in place of the standard "Chronometer."
-* No Bucherer / Beyer / Eaton 1/4 Century 1527 has surfaced — the retailer programs that bracketed the 1490 and 971 do not extend to the 1527 in the documented record. The Cooke & Kelvey example is the lone retailer-program example.
+* No Bucherer / Beyer / Eaton 1/4 Century 1527 has surfaced, the retailer programs that bracketed the 1490 and 971 do not extend to the 1527 in the documented record. The Cooke & Kelvey example is the lone retailer-program example.
 Hand styles cluster on blued steel dauphine and blued Breguet variants, with the sub-seconds hand consistently blued steel. Refinished sub-seconds hands are the standard service intervention.
@@ Line 182: / Line 182: @@
 | Antiquorum HK (lot 15/434)
 | 18K white + pink
-| —
+|,
 |-
 | 2005
 | Antiquorum Geneva (lot 100/1)
 | 18K white + yellow
-| —
+|,
 |-
 | 2006
@@ Line 202: / Line 202: @@
 | Sotheby's NY Time Museum (N08474)
 | stainless steel (only documented stainless)
-| —
+|,
 |-
 | 2013
@@ Line 235: / Line 235: @@
 |}
-The hammer band runs from USD 1,912 (steel + gold-filled, the 1940s budget configuration) to CHF 27,140 (Mondani 1931 white + yellow with bamboo bracelet, the corpus high). The bicolor 18K configurations sit in the GBP 5,000–9,000 range when sold in plain catalog form, rising sharply with provenance, original bracelet, or documented Mondani-tier provenance. The Cooke & Kelvey example at CHF 5,250 sits at the lower end of solid-gold configurations because the Cooke & Kelvey signing premium does not match the Bucherer or Beyer signing premium on the 1490 — the Calcutta retailer relationship is documented but smaller in market influence than the Swiss equivalents. Phillips carries no documented 1527 lots in their public archive — the reference's auction representation runs through Antiquorum, Bonhams, Sotheby's, and Christie's.
+The hammer band runs from USD 1,912 (steel + gold-filled, the 1940s budget configuration) to CHF 27,140 (Mondani 1931 white + yellow with bamboo bracelet, the corpus high). The bicolor 18K configurations sit in the GBP 5,000–9,000 range when sold in plain catalog form, rising sharply with provenance, original bracelet, or documented Mondani-tier provenance. The Cooke & Kelvey example at CHF 5,250 sits at the lower end of solid-gold configurations because the Cooke & Kelvey signing premium does not match the Bucherer or Beyer signing premium on the 1490, the Calcutta retailer relationship is documented but smaller in market influence than the Swiss equivalents. Phillips carries no documented 1527 lots in their public archive, the reference's auction representation runs through Antiquorum, Bonhams, Sotheby's, and Christie's.
 == Related references ==
-* [[Reference:1491|Prince 1491]] — 1930–1945
+* [[Reference:1491|Prince 1491]], 1930–1945
-* [[Reference:1490|Prince 1490]] — 1928–1945
+* [[Reference:1490|Prince 1490]], 1928–1945
-* [[Reference:1862|Prince 1862]] — 1928–1942
+* [[Reference:1862|Prince 1862]], 1928–1942
-* [[Reference:971|Prince 971]] — Brancard Art-Deco (1928–1938)
+* [[Reference:971|Prince 971]], Brancard Art-Deco (1928–1938)
-* [[Reference:1343|Prince 1343]] — Classic Rectangular (1928–1935)
+* [[Reference:1343|Prince 1343]], Classic Rectangular (1928–1935)
 * [[Reference:3361|Prince 3361]]
@@ Line 252: / Line 252: @@
-* "Rolex Prince Railway 1527 — Earliest Catalog Naming", Antiquorum, 1992
+* "Rolex Prince Railway 1527, Earliest Catalog Naming", Antiquorum, 1992
-* "Rolex Prince 1527 18K White + Yellow with Bamboo Bracelet — Mondani Collection 1931", Antiquorum, 2006-05
+* "Rolex Prince 1527 18K White + Yellow with Bamboo Bracelet, Mondani Collection 1931", Antiquorum, 2006-05
 * "Rolex Prince Railway 1527 18K White + Yellow Gold", Antiquorum, 2005
 * "Rolex Prince Railway 1527 18K White + Pink", Antiquorum, 2001
 * "Rolex Prince 1527 9K Two-Tone", Sotheby's, 2019
-* "Rolex Prince 1527 Stainless Steel — Time Museum", Sotheby's, 2008
+* "Rolex Prince 1527 Stainless Steel, Time Museum", Sotheby's, 2008
 * "Rolex Prince 1527 18K Yellow Cooke & Kelvey Calcutta", Sotheby's, 2013
 * "Rolex Prince 1527 18K Two-Tone", Christie's, 2015
 * "Rolex Prince 1527 18K White + Pink", Bonhams, 2026
 * "Rolex Prince 1527 Two-Color 18K", Bonhams, 2026
-* "Rolex Prince 1527 Steel + Gold-Filled — 1940s Production Anchor", Bonhams, 2006
+* "Rolex Prince 1527 Steel + Gold-Filled, 1940s Production Anchor", Bonhams, 2006
-* "Rolex Prince 1527 18K Yellow — Arman Collection", Artcurial, 2017
+* "Rolex Prince 1527 18K Yellow, Arman Collection", Artcurial, 2017
-* "Watch-guy.com on the 1527 Railway — 'the only rectangular Prince worth having'", Watchprosite, 2011
+* "Watch-guy.com on the 1527 Railway, 'the only rectangular Prince worth having'", Watchprosite, 2011
-* "Rolex Prince 1527 M White + Pink Stepped — Case 6920", Drouot
+* "Rolex Prince 1527 M White + Pink Stepped, Case 6920", Drouot
 * [https://www.rolexmagazine.com/2017/05/the-complete-history-of-rolex-prince.html Jake Ehrlich, "The Complete History of the Rolex Prince", Rolex Magazine, 2017-05]
 * [https://quillandpad.com/2019/04/09/the-golden-age-of-rolex-movements-part-i-sowing-the-seeds-of-greatness/ Tim Mosso, "The Golden Age of Rolex Movements Part I", Quill & Pad, 2019-04-09]