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{{DISPLAYTITLE:Rolex 4925 Air-King}}
{{DISPLAYTITLE:Rolex 4925 Air-King}}
{{#seo:
{{#seo:
|title=Rolex 4925 Air-King — The Originating Air-King, 1945 Battle of Britain Commemoration | Rolexopedia
|title=Rolex 4925 Air-King, c.1945–1950s — Hand-wound Oyster reference | Rolexopedia
|description=The 4925 is the founding Air-King reference — a hand-wound 34mm Oyster launched in 1945 to commemorate the RAF pilots of the Battle of Britain. Cal 10½ Hunter, eggshell dial with applied gold Arabic numerals, the only "Air" name that survived past the early 1950s.
|description=Reference guide to the hand-wound Rolex Air-King 4925, commonly dated from around 1945, with a 34mm Oyster case, Hunter-family movement, central seconds and documented early Air-King dial forms.
|keywords=Rolex, 4925, Air-King, Battle of Britain, Hunter caliber, Air-Lion, Air-Tiger, Air-Giant
|keywords=Rolex, 4925, Air-King, Battle of Britain, Hunter caliber, Air-Lion, Air-Tiger, Air-Giant
|image=Ref 4925 hero.webp
|image=Ref 4925 hero.webp
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</div>
</div>


The 4925 is the first Rolex Air-King — the 1945 hand-wound 34mm Oyster that gave the line its name. It launches alongside three sibling names: Air-Lion, Air-Tiger, Air-Giant. By the early 1950s only the Air-King survives. The 4925 carries the Air-King designation forward through the late 1940s and into the early 1950s, then hands off to the automatic 6552 (1953–57) and from there to the long-running 5500 (1957–89). Without the 4925 there is no Air-King line at all.
The 4925 is widely identified as the first Air-King reference: a hand-wound 34mm Oyster documented from around 1945. It appears alongside the Air-Lion, Air-Tiger and Air-Giant names. The automatic 6552 follows in the early 1950s, with the 5500 continuing the Air-King line from 1957. The exact boundary between 4925 catalogue production and later case-stock assembly remains disputed.


Inside the four-name commemoration sits a story that everyone repeats and nobody can primary-source. Hans Wilsdorf had been in London during the Battle of Britain and watched RAF pilots privately purchase Rolex Oysters because they preferred them to military-issue alternatives; the 1945 Air-King naming was, the canon goes, his commemoration of those pilots. Monochrome (Erik Slaven, January 2025), Marcus Siems, Rescapement (Tony Traina), ''Rolex Magazine'' (Jake Ehrlich, 2013), Robb Report, and ''Revolution'' all carry the framing in roughly identical form. None cite Wilsdorf's words, a period Rolex marketing piece, or Dowling and Hess's ''The Best of Time'' (the obvious candidate book). Only one dealer-side history hedges it with "according to legend." The Battle of Britain framing is universally repeated and never primary-sourced.
Modern Air-King histories repeat a Battle of Britain explanation, but no period Rolex advertisement, Wilsdorf statement or other primary source cited here confirms it. It remains attributed collector and editorial history.


<span id="core-facts"></span>
<span id="core-facts"></span>


== Core facts ==
==Core facts==


{| class="wikitable rp-facts"
{| class="wikitable rp-facts"
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|-
|-
| production
| production
| 1945–1953 consensus (Monochrome, Rescapement, Siems); case-number dating on Sotheby's lot 190 (case 354,085) places one example at c.1956 — case-stock assembly continued past the catalogue end
| commonly dated 1945–1953; a Sotheby's 2020 lot is catalogued c.1956, which may reflect late case-stock assembly
|-
|-
| case
| case
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|-
|-
| water resistance
| water resistance
| 50m
| not stated consistently in the cited period records
|-
|-
| movement
| movement
| Aegler Cal. 10½ ligne "Hunter" family — 15 jewels (early), 17 jewels (later running update), 18,000 vph, central seconds, manual wind, non-chronometer
| Aegler 10½-ligne Hunter family; documented examples include 15- and 17-jewel manual-wind movements with central seconds
|-
|-
| dial text
| dial text
| "OYSTER AIR-KING," typically with "PRECISION" line above six (some 4925s without "PRECISION" text); applied gold Arabic numerals throughout the documented production run, on eggshell ground early and on a silvered ground in late-production bridging stock (Sotheby's lot 190, c.1956) — no baton-index 4925 is documented in the auction record
| “OYSTER AIR-KING,” with some examples carrying “PRECISION”; cited examples use applied gold Arabic numerals on eggshell or silvered grounds
|-
|-
| bracelet
| bracelet
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== Where it sits in the line ==
== Where it sits in the line ==


The 4925 sits at the front of every Air-King story. The Air-King line has no pre-1945 history; the 4925 is where the dial-text designation begins. It runs alongside the 4365 (1945, sub-seconds variant on the same case architecture, the canonical Air-Lion / Air-Tiger / Air-Giant case), the 4444 (mid-size with solid-gold bezel and crown, ran Air-Lion / Air-Giant / Air-King dial-signed examples), the 4647 (Hunter Precision case that surfaces with Air-Lion signing), and the 4499 (1946 onward, an upgraded 17-jewel running mate that some sources read as the 4925's successor and others as a parallel sibling). Reading 4499 as a strict successor is the specialist reference site Time-Wire's line; Siems and ''Rolex Magazine'' read the four-reference launch as parallel.
The 4925 is the earliest reference in the commonly published Air-King sequence. It appears alongside the 4365, 4444 and 4647 cases used with Air-Lion, Air-Tiger or Air-Giant dials, while the 4499 is read by some sources as a successor and by others as a parallel reference. Time-Wire treats the 4499 as a replacement; Siems and ''Rolex Magazine'' present the launch references as parallel.


The case architecture handed off to the 6552 in 1953 — same 34mm Oyster envelope, but with the new automatic Cal. 1030 underneath and an applied coronet at twelve replacing the early printed-coronet dial layout. The 5500 (1957–89) succeeds the 6552 and runs the Cal. 1530 / 1520 generation across the Air-King line for 32 more years. Time-Wire reads 5500 as the direct successor to 4925, skipping the 6552 entirely; the canonical sequence is 4925 → 6552 → 5500.
The 6552 is generally placed after the 4925, with an automatic caliber 1030 and a later dial layout. The 5500 follows in 1957 with the 1530/1520 generation. Some reference guides skip the 6552 when describing the line, so the 4925-to-6552-to-5500 sequence should be read as the commonly used catalogue chronology rather than an unbroken case lineage.


The Air-King survives where Air-Lion, Air-Tiger, and Air-Giant do not. The other three names disappear from Rolex's catalogue by the early 1950s. Air-Tiger reappears on the Tudor side as ref 7957 (Foundwell c.1959, Analog:Shift c.1964), continuing the cross-brand Battle of Britain commemoration into the Tudor catalogue after Rolex retires it. Air-Lion and Air-Giant don't make the Tudor jump.
The Air-King name continues after the early-1950s period in the cited histories, while Air-Lion, Air-Tiger and Air-Giant disappear from Rolex references. Tudor Air-Tiger examples are documented separately; that later use does not prove the original Rolex commemoration story.


<span id="production-outline"></span>
<span id="production-outline"></span>
== Production outline ==
== Production outline ==


The launch year is firm. 1945 across Siems, Monochrome (Erik Slaven, January 2025), Rescapement (Tony Traina), ''Rolex Magazine'' (Jake Ehrlich, 2013), Robb Report, and Watch-Wiki. The 1945 launch ties the Air-King naming directly to the end of the war and the Battle of Britain commemoration the canon attaches to it.
Modern histories commonly date the launch to 1945. That date does not by itself prove the Battle of Britain explanation, which remains an attributed story without a cited primary source.


The end year is contested. 1953 is the consensus retirement date — Siems, Monochrome, Rescapement, Robb Report. Antiquorum lot 382 (25 September 2002) reads instead "the Air-King was first introduced in 1953 in honor of the Royal Air Force pilots who flew in the battle of Britain," treating the automatic 6552 as the "real" launch — a major-house catalogue text that contradicts the 1945-launch consensus. ''Time-Wire'' narrows the 4925 specifically to "approximately 1945–1946" and reads the 4499 as its 1946 replacement. Sotheby's lot 190 (4 September 2020) catalogues a 4925 by case number 354,085 to c.1956, and a dealer-documented eBay artifact carries a 1958 dial — both push the upper bound past the 1953 consensus.
The end year is contested. 1953 is the consensus retirement date — Siems, Monochrome, Rescapement, Robb Report. Antiquorum lot 382 (25 September 2002) reads instead "the Air-King was first introduced in 1953 in honor of the Royal Air Force pilots who flew in the battle of Britain," treating the automatic 6552 as the "real" launch — a major-house catalogue text that contradicts the 1945-launch consensus. ''Time-Wire'' narrows the 4925 specifically to "approximately 1945–1946" and reads the 4499 as its 1946 replacement. Sotheby's lot 190 (4 September 2020) catalogues a 4925 by case number 354,085 to c.1956, and a dealer-documented eBay artifact carries a 1958 dial — both push the upper bound past the 1953 consensus.


The cleanest reading: 4925 enters the catalogue in 1945, is formally retired in 1953 when the automatic 6552 takes over, and continues to be cased and dispatched out of leftover stock into the late 1950s. 1945–1953 is the active production window; case-number examples post-1953 are late stock.
The cautious reading is that 4925 enters the catalogue around 1945 and is replaced in the catalogue by the automatic 6552 around 1953. The Sotheby's c.1956 example may represent late case-stock assembly, but the source does not establish how common that practice was.


Total production output is not published by Rolex for any 4925. The reference is scarce at major-house auction — Sotheby's lot 190 (2020) is the only standalone Phillips / Sotheby's / Christie's / Bonhams 4925 lot to surface in the auction record. Antiquorum has stronger 4925 coverage but most Antiquorum Air-King lots from the 1990s and 2000s are 5500-era rather than 4925. The two Baer & Bosch lots (AN3907 and lot 3189, both 2019) round out the documented record.
No Rolex production total is published for the 4925. The indexed record contains a Sotheby’s 4925 lot and two Baer & Bosch examples; other Air-King auction entries often refer to later references. That record does not establish how many 4925 watches survive or how many were made.


<span id="movement-notes"></span>
<span id="movement-notes"></span>
== Movement notes ==
== Movement notes ==


[[File:Ref 4925 movement.webp|thumb|right|300px|Cal. Hunter movement, 17 jewels stamped ROW; inner caseback marked "4925" with an RWC LTD service tag]]
The 4925 runs an Aegler 10½-ligne Hunter-family movement. Cited examples include 15- and 17-jewel manual-wind movements with central seconds; the exact caliber designation and jewel count need to be read from the movement in each watch. Sotheby's lot 190 records a 17-jewel movement stamped ROW. The cited Hunter movements are not presented as chronometer-certified.
The 4925 runs the Aegler Cal. 10½ ligne Hunter family — the same caliber lineage that powers the contemporary Bubbleback line and the 4365 / 4444 / 4499 sister Air-references. The "Hunter" designation refers to the 700-series base architecture: caliber 700 / 710 / 720 / similar, with running updates across the production window. Manual wind, central seconds, 15 jewels in the early production, 17 jewels as a running update later (Sotheby's lot 190 catalogues "17 jewels, stamped ROW"). 18,000 vph, non-chronometer, no shock protection in the earliest examples.


The caliber is the technical bridge between the pre-war Bubbleback manual-wind movements and the post-1953 automatic 1030 generation. The Hunter caliber's 10½-ligne envelope sets the case profile — flat enough that the 4925 doesn't need the deep "bubbleback" caseback dome required for the Perpetual rotor. The case profile is closer to the post-war flat-case Oyster than to the pre-war Bubbleback proper.
The Hunter movement links the hand-wound Oyster references to the automatic 1030 generation that follows. Its smaller manual-wind package does not need the deep rotor clearance of a Perpetual Bubbleback, which helps explain the flatter case profile.


Colin A. White's ''The Vintage Rolex Field Manual'' treats the early Hunter calibers as a transitional generation — chronologically post-Bubbleback but pre-modern, and powered by Aegler movements that continue the 1930s shaped-caliber lineage but in round 10½-ligne form. The 4925 inherits this caliber and uses it for the entire production window. The 6552 successor in 1953 is the first Air-King to break the 10½ Hunter line and adopt the modern 1030 architecture.
Colin A. White's ''The Vintage Rolex Field Manual'' treats early Hunter calibers as a transitional Aegler movement family. The 4925 examples in these records use that family; the 6552 is associated with the later automatic 1030 generation.
 
[[File:Ref 4925 movement.webp|thumb|right|300px|Cal. Hunter movement, 17 jewels stamped ROW; inner caseback marked "4925" with an RWC LTD service tag|alt=Cal. Hunter movement, 17 jewels stamped ROW; inner caseback marked "4925" with an RWC LTD service tag]]


<span id="dial-map"></span>
<span id="dial-map"></span>
== Dial map ==
== Dial map ==


The 4925 dial map is narrower than the 5500 — a function both of the shorter production window and of the lower auction visibility. Documented variants:
The cited 4925 record is narrower than the later 5500 record. Documented variants include:


<span id="eggshell-applied-arabic"></span>
<span id="eggshell-applied-arabic"></span>
=== Eggshell with applied gold Arabic numerals ===
=== Eggshell with applied gold Arabic numerals ===


The canonical 4925 dial. Eggshell or cream ground, applied gold Arabic hour markers in a shallow avant-garde font, leaf or pencil hands, blued central seconds. Rolex crown printed below twelve, "OYSTER AIR-KING" beneath, simple track of matching applied dots around the perimeter. Monochrome describes this as the originating layout; the Baer & Bosch 2019 lot AN3907 confirms the configuration ("silver Rolex Oyster Air-King dial with applied gold-tone Arabic and arrowhead hour markers"). The dominant configuration on early-to-mid production 4925s.
Eggshell or cream ground, applied gold Arabic hour markers, leaf or pencil hands and a central seconds hand are documented on early examples. The crown is printed below twelve, with “OYSTER AIR-KING” beneath. Monochrome describes this layout, and the Baer & Bosch 2019 lot AN3907 records applied gold-tone Arabic and arrowhead markers.


<span id="precision-vs-no-precision"></span>
<span id="precision-vs-no-precision"></span>
=== "PRECISION" text vs no precision text ===
=== "PRECISION" text vs no precision text ===


Time-Wire records two dial sub-variants — one with "PRECISION" printed below the AIR-KING line, one without. The PRECISION text is consistent with the period Rolex grading-language convention (Precision, Extra Precision, Super Precision; the Hunter caliber was never chronometer-rated, so PRECISION is the highest grade text the 4925 carries). The non-PRECISION variant either pre-dates the convention or represents an early-production minority.
Time-Wire records examples with and without “PRECISION” below the Air-King line. The word belongs to period Rolex grading language; its presence or absence alone does not date a dial or prove a movement grade.


<span id="early-1945-no-swiss-made"></span>
<span id="early-1945-no-swiss-made"></span>
=== Early-1945 dials with no SWISS MADE text ===
=== Early-1945 dials with no SWISS MADE text ===


Time-Wire flags a sub-variant of the early production: dials without "SWISS MADE" at the bottom, succeeded by the standard SWISS-MADE-text dials later in the same year. The omission likely reflects pre-mandatory-marking-era production rather than a marketing choice; the SWISS MADE requirement on Swiss watch dials post-dates the early-1945 launch.
Time-Wire records early examples without “SWISS MADE”. The cited evidence does not establish the reason for the omission.


<span id="silvered-applied-arabic-late"></span>
<span id="silvered-applied-arabic-late"></span>
=== Silvered ground with applied Arabic numerals (late production) ===
=== Silvered ground with applied Arabic numerals (late production) ===


[[File:Ref 4925 silvered-late.webp|thumb|right|250px|The silvered-ground late-production 4925, case 354,085, c.1956]]
Sotheby's lot 190 (2020) catalogues a 4925 with a silvered dial and alpha hands, the case dated by serial number 354,085 to c.1956. The catalogue records only “Dial: silvered”; its photography appears to show applied Arabic numerals. The lot may represent late case-stock assembly around the transition to the 6552, but it does not prove how or when the dial and case were originally paired.
Sotheby's lot 190 (2020) catalogues a 4925 with a silvered dial and alpha hands, the case dated by serial number 354,085 to c.1956. The lot's catalogue text records only "Dial: silvered" and does not describe the marker style; the lot's own photography shows the same applied Arabic-numeral layout as the canonical eggshell dial, not baton indices. The example reads as a late-production 4925 made out of bridging stock as the 6552 was taking over, carrying the applied-Arabic dial forward onto a silvered rather than eggshell base.


The Roman, sector, salmon, honeycomb, clous-de-Paris, tropical, RAF crest, and retailer-signed (Asprey, Tiffany, Beyer, Cartier, Gübelin) 4925 configurations are not documented in major-house lots. A 1958-dated eBay listing surfaces a "Military Dial" 4925 but the configuration is unverified.
The Roman, sector, salmon, honeycomb, clous-de-Paris, tropical, RAF crest, and retailer-signed (Asprey, Tiffany, Beyer, Cartier, Gübelin) 4925 configurations are not documented in major-house lots. A 1958-dated eBay listing surfaces a "Military Dial" 4925 but the configuration is unverified.
[[File:Ref 4925 silvered-late.webp|thumb|right|250px|The silvered-ground late-production 4925, case 354,085, c.1956|alt=The silvered-ground late-production 4925, case 354,085, c.1956]]


<span id="case-and-construction"></span>
<span id="case-and-construction"></span>
== Case and construction ==
== Case and construction ==
34mm stainless steel three-piece Oyster, with case middle, threaded caseback and threaded crown. The case profile is flatter than a rotor-driven Bubbleback because the Hunter movement is manual wind. Lugs are 19mm with drilled spring-bar holes. The bezel is fixed, steel and smooth. The crown is a manual-wind brevet, screw-down, and predates the later Twinlock system.
The case is steel in the documented 4925 examples. The 4444 carries a documented two-tone construction, but it is a different reference. Sotheby's lot 190 gives 33mm rather than 34mm; the difference may reflect measurement method.
The caseback exterior is smooth without a date stamp. The interior carries reference and case-number markings. Roman-quarter codes appear in some documented casebacks and can help date an individual watch when read with its serial and movement. Drilled spring-bar holes are documented on the cited examples.


<gallery mode="packed" heights="180">
<gallery mode="packed" heights="180">
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File:Ref 4925 caseback-exterior.webp|Smooth caseback exterior, no date stamp
File:Ref 4925 caseback-exterior.webp|Smooth caseback exterior, no date stamp
</gallery>
</gallery>
34mm stainless steel three-piece Oyster — case middle, threaded caseback, threaded crown. The case profile reads closer to the post-war flat Oyster than to the pre-war Bubbleback proper; the Cal. 10½ Hunter doesn't need the rotor-clearance dome. Lugs are 19mm with drilled spring-bar holes. The bezel is fixed and steel and smooth. The crown is a manual-wind brevet, screw-down, no Twinlock; the 4925 predates Twinlock, which arrives in the 1950s on the Oyster sport line.
The case is steel-only across documented examples. The 4444 (Air-Lion / Air-Giant / Air-King) carries a documented two-tone construction with a solid-gold bezel and crown, but the 4925 is consistently catalogued in plain steel. Sotheby's lot 190 (2020) gives 33mm rather than 34mm — within measurement-method tolerance for a watch usually quoted at 34mm. Across all surfaced major-house lots the case dimensions read consistent.
The caseback exterior is smooth without a date stamp. The interior carries reference and case-number markings. Roman-quarter date codes (II.46, III.48, IV.51, etc.) inside the caseback are the cleanest per-watch dating tell. Drilled spring-bar holes are period-correct on the 4925 lugs and persist into the 5500 era; the convention on the 4925 is consistent with the broader pre-1990 vintage Rolex line.


<span id="bracelets-end-links-and-clasps"></span>
<span id="bracelets-end-links-and-clasps"></span>
== Bracelets, end-links, and clasps ==
== Bracelets, end-links, and clasps ==
The 4925 predates the later numbered bracelet system. A 19mm rivet Oyster is period-correct in principle, but the cited Baer & Bosch AN3907 example carries a 7205 with a 1967 clasp date, so that bracelet is a later refit. Bracelet originality needs case and clasp evidence; the bracelet reference alone is not proof of original delivery.


<gallery mode="packed" heights="180">
<gallery mode="packed" heights="180">
File:Ref 4925 bracelet.webp|7205 rivet Oyster bracelet, a service-era refit -- Baer & Bosch lot AN3907
File:Ref 4925 bracelet.webp|7205 rivet Oyster bracelet, a service-era refit, Baer & Bosch lot AN3907
File:Ref 4925 clasp.webp|Folded Oyster clasp, Rolex coronet stamp -- Baer & Bosch lot AN3907
File:Ref 4925 clasp.webp|Folded Oyster clasp, Rolex coronet stamp, Baer & Bosch lot AN3907
</gallery>
</gallery>
The 4925 era pre-dates the formal numbered Oyster bracelet references that anchor the later Air-King line. Period-correct fitment is a 19mm rivet Oyster with the early 6635-class end-links. The 7205 rivet Oyster (with end-link 57) that becomes standard on the 5500 also turns up on late-production 4925s and on service-era refits — Baer & Bosch lot AN3907 documents a 4925 case fitted with a 7205 dating from 1967 (clasp date code), making it a service-era refit rather than original delivery. Bracelet originality on a 4925 needs case-and-clasp-date verification rather than relying on the bracelet reference number alone, and most surviving 4925s wear bracelets that post-date the 4925's own production by a decade or more.


<span id="special-branches"></span>
<span id="special-branches"></span>
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=== The Battle of Britain commemoration ===
=== The Battle of Britain commemoration ===


The framing canonical to every published Air-King history: Hans Wilsdorf was in London during the Battle of Britain and watched RAF pilots privately purchase Rolex Oysters because they preferred them to military issue, and the 1945 Air-King naming commemorated those pilots. Monochrome, Siems, Rescapement, ''Rolex Magazine'', Robb Report, ''Revolution'', Foundwell, and Analog:Shift all carry the framing in close-to-identical form.
Modern histories often say that Hans Wilsdorf named the Air-King for RAF pilots and the Battle of Britain. No Wilsdorf statement, period Rolex advertisement or other primary source cited on this page confirms that explanation. It remains an attributed origin story.
 
No primary source surfaces in this article's research pass. None of the published editorial cites Wilsdorf's words, period Rolex marketing material, or Dowling and Hess's ''The Best of Time'' (the canonical Rolex history book and the obvious candidate for the primary source). Only one dealer-side history prefaces the story with "according to legend." The framing is universally repeated and never primary-sourced.


<span id="air-lion-tiger-giant"></span>
<span id="air-lion-tiger-giant"></span>
=== Air-Lion, Air-Tiger, Air-Giant — the sister names ===
<span id="Air-Lion,_Air-Tiger,_Air-Giant_—_the_sister_names"></span>
=== Air-Lion, Air-Tiger and Air-Giant ===


The Air-King launches alongside three sister names in the 1945 commemoration. None of the three runs on a dedicated reference number; instead the names share refs 4365 (sub-seconds 10½ Hunter), 4444 (mid-size with solid-gold bezel and crown, 31.75mm), and 4647 (Hunter Precision case). Siems publishes a side-by-side photograph captioned "Air-Tiger (left), Air-Giant (middle) and Air-Lion (right) — all reference 4365 from the 1940s," confirming the same case-and-movement combination took whichever sister name the market called for.
The Air-Lion, Air-Tiger and Air-Giant names appear on several early Air references. Siems publishes a side-by-side photograph identifying all three on reference 4365, while 4444 and 4647 examples show other case and movement combinations. The names and references should therefore be recorded separately on each watch.


The 4444 is the most-documented mid-size sister: A documented 4444 Air-Lion (steel with solid-gold bezel and crown, 17-jewel manual) is described in dealer catalogue text as "extremely uncommon, having encountered only one other in over 35 years." The 4647 surfaces less frequently — Foundwell catalogues a 4647 Air-Lion (~1947, 31×39mm Hunter Precision), the only 4647 surfaced in the auction record.
The cited 4444 Air-Lion example has a steel case with solid-gold bezel and crown and a 17-jewel manual movement. Foundwell catalogues a 4647 Air-Lion from around 1947 with a Hunter Precision movement. These are examples, not a complete census of the sister names.


By the early 1950s Rolex retires Air-Lion, Air-Tiger, and Air-Giant. Only Air-King survives. Tudor revives Air-Tiger on its own ref 7957 (Foundwell c.1959, Analog:Shift c.1964), and the cross-brand Air-Tiger continuation explains why the name disappears from Rolex but persists on Tudor catalogues into the 1960s. Air-Lion and Air-Giant make no jump and disappear entirely.
The cited histories place Air-Lion, Air-Tiger and Air-Giant outside the continuing Rolex Air-King line by the early 1950s. Tudor Air-Tiger examples from around 1959 and 1964 are documented separately; they do not establish a direct corporate continuation of the original naming story.


<span id="early-1945-no-swiss-made-variant"></span>
<span id="early-1945-no-swiss-made-variant"></span>
=== Early-1945 dials without SWISS MADE ===
=== Early-1945 dials without SWISS MADE ===


A small early-production sub-variant carries dials without the "SWISS MADE" text at the bottom edge. The omission pre-dates Rolex's adoption of the convention rather than reflecting a marketing or market-specific choice; the early-1945 4925s sit on the boundary of when SWISS MADE became standard on Rolex dials. ''Time-Wire'' records the variant; no major-house lot anchor surfaces.
A small early-production sub-variant is reported without “SWISS MADE” at the bottom edge. Time-Wire records the variant, but the available sources do not establish the reason for the omission or its exact date range.


<span id="historical-market-and-auction-record"></span>
<span id="historical-market-and-auction-record"></span>
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|}
|}


The 4925 is scarce at major-house auction. Phillips, Christie's, and Bonhams have no documented standalone 4925 lots through 2025. Sotheby's lot 190 (2020) is the only Phillips-tier 4925 to surface in the auction record and did not sell at its USD 5,000–7,000 estimate. The visible auction record sits well below 10 strong examples — a function of the 1945 production window's age, the modest profile of the watch in its day (this was an entry-level Rolex in its day), and the 80-year service-and-restoration history that has compromised most surviving examples.
The cited auction record is small. Sotheby's lot 190 (2020) did not sell at its USD 5,000–7,000 estimate, while the Baer & Bosch lots provide additional photographed examples. Auction visibility cannot establish how many 4925 watches survive or how many were originally made.


<span id="authentication"></span>
<span id="authentication"></span>
== Authentication ==
== Authentication ==


The 4925 is 80 years old. Most surviving examples have been serviced multiple times across that span, and dial restoration was particularly common during the 1980s–2000s collector window when the early Air-King was less prized than it became after the Air-King family's rediscovery. The dial-restoration logic Eric Wind documents at Wind Vintage applies: a perfectly clean original dial on an 80-year-old 4925 should be treated as suspect; period patina (silvering loss, applied-marker shadowing, lume aging on the printed coronet) is the originality positive.
The 4925 is about 80 years old, and service or dial work is possible on any surviving example. A clean dial is not proof of replacement, and patina is not proof of originality. Check the printing, applied markers, hand set, case marks and movement together.


The case interior should carry the 4925 reference stamp and a Roman-quarter date code consistent with the 1945–1953 production window. Case numbers in the auction record run roughly 350,000–360,000 (Sotheby's lot 190 case 354,085) for the late-production examples; earlier 4925s carry lower case numbers. A 4925 with a case number outside this band — particularly any case number above 400,000 — should be examined carefully; case-stock assembly into the late 1950s is documented but not unlimited, and a much later case number is more likely a service-replacement case middle than original delivery.
The case interior may carry the 4925 reference, a case number and a Roman-quarter code. Sotheby's lot 190 has case number 354,085 and is catalogued c.1956, but one case number cannot define a hard range. A later number should prompt a check of the case, movement, dial and service history rather than an automatic rejection.


The movement number versus the case number is the standard authentication anchor. Both should be period-consistent and should match the catalogue's recorded ranges where they exist. A 4925 with a Cal 1030 (the 6552 successor's caliber), Cal 1530, or Cal 1520 movement is a service-replacement movement and not original — the 4925 should always carry a Cal 10½ Hunter family movement (700 / 710 / 720 series). The "stamped ROW" marking documented on Sotheby's lot 190 (Rolex Watch Co.) is period-correct.
The movement and case should be assessed together. A 4925 example with caliber 1030, 1530 or 1520 would need a service or re-case explanation because the cited 4925 examples use the 10½-ligne Hunter family; the movement must be inspected before making that call. The “stamped ROW” marking documented on Sotheby's lot 190 is evidence for that lot, not a universal requirement.


The bracelet usually doesn't help. Most surviving 4925s wear post-1960s bracelets — Baer & Bosch lot AN3907 is on a 1967-clasp 7205 — and a period-correct rivet Oyster from the 4925's own production window is rare in surviving inventory. Authenticate the head and movement first, then read the bracelet as supplementary evidence rather than as an originality anchor.
Bracelets provide limited dating evidence. Baer & Bosch lot AN3907 is on a 7205 with a 1967 clasp date, and the cited record contains few bracelets from the 4925 production window. Authenticate the watch head and movement first, then treat the bracelet as supplementary evidence.


== Related references ==
== Related references ==
Line 213: Line 215:
* [[Reference:4365|Air-King 4365]]
* [[Reference:4365|Air-King 4365]]
* [[Reference:4499|Air-King 4499]]
* [[Reference:4499|Air-King 4499]]
* [[Reference:5500|Air-King 5500]] — 34mm Oyster (1957–1989)
* [[Reference:5500|Air-King 5500]], 34mm Oyster, 1957–1989
* [[Reference:5501|Air-King 5501]]
* [[Reference:5501|Air-King 5501]]
* [[Reference:5502|Air-King 5502]]
* [[Reference:5502|Air-King 5502]]
Line 219: Line 221:


See also the [[Reference:air-king|Air-King family index]], [[Reference:Movements|movement reference]], [[Reference:Bracelets|bracelet & clasp guide]], and [[Reference:Serial-numbers|serial numbers by year]].
See also the [[Reference:air-king|Air-King family index]], [[Reference:Movements|movement reference]], [[Reference:Bracelets|bracelet & clasp guide]], and [[Reference:Serial-numbers|serial numbers by year]].
<gallery mode="packed" heights="180">
File:Ref 4925 hero.webp|alt=Rolex 4925 Air-King|Rolex 4925 Air-King
File:Ref 4925 movement.webp|alt=Hunter-family movement in a Rolex 4925|Hunter-family movement
File:Ref 4925 silvered-late.webp|alt=Silvered late 4925 dial, case 354,085|Silvered late dial
File:Ref 4925 bracelet.webp|alt=7205 rivet bracelet on a 4925 service refit|Later bracelet refit
</gallery>


== Sources ==
== Sources ==
Line 226: Line 235:
* [https://goldammer.me/blogs/articles/rolex-airking-origin-history-and-design-evolution Marcus Siems, "Rolex Air-King Origin History and Design Evolution", Goldammer]
* [https://goldammer.me/blogs/articles/rolex-airking-origin-history-and-design-evolution Marcus Siems, "Rolex Air-King Origin History and Design Evolution", Goldammer]
* [https://beckertime.com/blog/rolex-decades-the-40s-air-king-versus-the-50s-air-king/ "Rolex Decades The 40s Air-King Versus The 50s Air-King", Beckertime]
* [https://beckertime.com/blog/rolex-decades-the-40s-air-king-versus-the-50s-air-king/ "Rolex Decades The 40s Air-King Versus The 50s Air-King", Beckertime]
* [https://time-wire.com/watch_model/air-king/ "Air-King: History, Specs & References", Time-Wire]
* [https://www.rolexmagazine.com/2013/07/the-complete-history-of-the-air-king.html "The Complete History Of The Air King", Rolex Magazine]
* [https://www.sothebys.com/en/buy/auction/2020/watches-3/rolex-reference-4925-oyster-air-king-a-stainless "Rolex Reference 4925 Oyster Air-King Stainless Steel Center Seconds Wristwatch c.1956", Sotheby's, 2020]
* [https://www.sothebys.com/en/buy/auction/2020/watches-3/rolex-reference-4925-oyster-air-king-a-stainless "Rolex Reference 4925 Oyster Air-King Stainless Steel Center Seconds Wristwatch c.1956", Sotheby's, 2020]
* [https://catalog.antiquorum.swiss/en/lots/rolex-lot-30-382 "Rolex Oyster Perpetual Air-King Super Precision 1950s Lot 382", Antiquorum, 2002]
* [https://catalog.antiquorum.swiss/en/lots/rolex-lot-30-382 "Rolex Oyster Perpetual Air-King Super Precision 1950s Lot 382", Antiquorum, 2002]

Latest revision as of 05:14, 29 September 2026


Air-King › 4925

Rolex 4925 Air-King, eggshell dial with applied gold Arabic numerals, c.1945–1948
Rolex 4925 Air-King, eggshell dial with applied gold Arabic numerals, c.1945–1948

The 4925 is widely identified as the first Air-King reference: a hand-wound 34mm Oyster documented from around 1945. It appears alongside the Air-Lion, Air-Tiger and Air-Giant names. The automatic 6552 follows in the early 1950s, with the 5500 continuing the Air-King line from 1957. The exact boundary between 4925 catalogue production and later case-stock assembly remains disputed.

Modern Air-King histories repeat a Battle of Britain explanation, but no period Rolex advertisement, Wilsdorf statement or other primary source cited here confirms it. It remains attributed collector and editorial history.

Core facts

detail value
reference 4925
family Air-King
common name "the original Air-King," "the hand-wound Air-King"
production commonly dated 1945–1953; a Sotheby's 2020 lot is catalogued c.1956, which may reflect late case-stock assembly
case 34mm stainless steel Oyster, Bubbleback-class three-piece, smooth bezel, screw-down brevet crown (manual — no Twinlock in the period), drilled lugs
crystal acrylic plexiglass, domed
water resistance not stated consistently in the cited period records
movement Aegler 10½-ligne Hunter family; documented examples include 15- and 17-jewel manual-wind movements with central seconds
dial text “OYSTER AIR-KING,” with some examples carrying “PRECISION”; cited examples use applied gold Arabic numerals on eggshell or silvered grounds
bracelet 19mm Oyster — period-correct rivet bracelet (the 7205 successor to the 6635 era arrives later in the production window)
caseback screw-down threaded Oyster, smooth exterior; presentation engravings turn up but are not catalogued at major-house auction
sister names Air-Lion, Air-Tiger, Air-Giant — ran on shared references (4365 sub-seconds, 4444 mid-size with gold bezel, 4647 Hunter Precision) rather than dedicated reference numbers
predecessor direct period antecedent is the manual-wind Bubbleback line (2940 / 2764 / 3131 / 3135 era); the Air-King naming itself has no predecessor
successor 6552 (1953–57, first automatic Air-King, cal 1030)

Where it sits in the line

The 4925 is the earliest reference in the commonly published Air-King sequence. It appears alongside the 4365, 4444 and 4647 cases used with Air-Lion, Air-Tiger or Air-Giant dials, while the 4499 is read by some sources as a successor and by others as a parallel reference. Time-Wire treats the 4499 as a replacement; Siems and Rolex Magazine present the launch references as parallel.

The 6552 is generally placed after the 4925, with an automatic caliber 1030 and a later dial layout. The 5500 follows in 1957 with the 1530/1520 generation. Some reference guides skip the 6552 when describing the line, so the 4925-to-6552-to-5500 sequence should be read as the commonly used catalogue chronology rather than an unbroken case lineage.

The Air-King name continues after the early-1950s period in the cited histories, while Air-Lion, Air-Tiger and Air-Giant disappear from Rolex references. Tudor Air-Tiger examples are documented separately; that later use does not prove the original Rolex commemoration story.

Production outline

Modern histories commonly date the launch to 1945. That date does not by itself prove the Battle of Britain explanation, which remains an attributed story without a cited primary source.

The end year is contested. 1953 is the consensus retirement date — Siems, Monochrome, Rescapement, Robb Report. Antiquorum lot 382 (25 September 2002) reads instead "the Air-King was first introduced in 1953 in honor of the Royal Air Force pilots who flew in the battle of Britain," treating the automatic 6552 as the "real" launch — a major-house catalogue text that contradicts the 1945-launch consensus. Time-Wire narrows the 4925 specifically to "approximately 1945–1946" and reads the 4499 as its 1946 replacement. Sotheby's lot 190 (4 September 2020) catalogues a 4925 by case number 354,085 to c.1956, and a dealer-documented eBay artifact carries a 1958 dial — both push the upper bound past the 1953 consensus.

The cautious reading is that 4925 enters the catalogue around 1945 and is replaced in the catalogue by the automatic 6552 around 1953. The Sotheby's c.1956 example may represent late case-stock assembly, but the source does not establish how common that practice was.

No Rolex production total is published for the 4925. The indexed record contains a Sotheby’s 4925 lot and two Baer & Bosch examples; other Air-King auction entries often refer to later references. That record does not establish how many 4925 watches survive or how many were made.

Movement notes

The 4925 runs an Aegler 10½-ligne Hunter-family movement. Cited examples include 15- and 17-jewel manual-wind movements with central seconds; the exact caliber designation and jewel count need to be read from the movement in each watch. Sotheby's lot 190 records a 17-jewel movement stamped ROW. The cited Hunter movements are not presented as chronometer-certified.

The Hunter movement links the hand-wound Oyster references to the automatic 1030 generation that follows. Its smaller manual-wind package does not need the deep rotor clearance of a Perpetual Bubbleback, which helps explain the flatter case profile.

Colin A. White's The Vintage Rolex Field Manual treats early Hunter calibers as a transitional Aegler movement family. The 4925 examples in these records use that family; the 6552 is associated with the later automatic 1030 generation.

Cal. Hunter movement, 17 jewels stamped ROW; inner caseback marked "4925" with an RWC LTD service tag
Cal. Hunter movement, 17 jewels stamped ROW; inner caseback marked "4925" with an RWC LTD service tag

Dial map

The cited 4925 record is narrower than the later 5500 record. Documented variants include:

Eggshell with applied gold Arabic numerals

Eggshell or cream ground, applied gold Arabic hour markers, leaf or pencil hands and a central seconds hand are documented on early examples. The crown is printed below twelve, with “OYSTER AIR-KING” beneath. Monochrome describes this layout, and the Baer & Bosch 2019 lot AN3907 records applied gold-tone Arabic and arrowhead markers.

"PRECISION" text vs no precision text

Time-Wire records examples with and without “PRECISION” below the Air-King line. The word belongs to period Rolex grading language; its presence or absence alone does not date a dial or prove a movement grade.

Early-1945 dials with no SWISS MADE text

Time-Wire records early examples without “SWISS MADE”. The cited evidence does not establish the reason for the omission.

Silvered ground with applied Arabic numerals (late production)

Sotheby's lot 190 (2020) catalogues a 4925 with a silvered dial and alpha hands, the case dated by serial number 354,085 to c.1956. The catalogue records only “Dial: silvered”; its photography appears to show applied Arabic numerals. The lot may represent late case-stock assembly around the transition to the 6552, but it does not prove how or when the dial and case were originally paired.

The Roman, sector, salmon, honeycomb, clous-de-Paris, tropical, RAF crest, and retailer-signed (Asprey, Tiffany, Beyer, Cartier, Gübelin) 4925 configurations are not documented in major-house lots. A 1958-dated eBay listing surfaces a "Military Dial" 4925 but the configuration is unverified.

The silvered-ground late-production 4925, case 354,085, c.1956
The silvered-ground late-production 4925, case 354,085, c.1956

Case and construction

34mm stainless steel three-piece Oyster, with case middle, threaded caseback and threaded crown. The case profile is flatter than a rotor-driven Bubbleback because the Hunter movement is manual wind. Lugs are 19mm with drilled spring-bar holes. The bezel is fixed, steel and smooth. The crown is a manual-wind brevet, screw-down, and predates the later Twinlock system.

The case is steel in the documented 4925 examples. The 4444 carries a documented two-tone construction, but it is a different reference. Sotheby's lot 190 gives 33mm rather than 34mm; the difference may reflect measurement method.

The caseback exterior is smooth without a date stamp. The interior carries reference and case-number markings. Roman-quarter codes appear in some documented casebacks and can help date an individual watch when read with its serial and movement. Drilled spring-bar holes are documented on the cited examples.

  • Case profile: screw-down manual-wind crown, no Twinlock
    Case profile: screw-down manual-wind crown, no Twinlock
  • Smooth caseback exterior, no date stamp
    Smooth caseback exterior, no date stamp

Bracelets, end-links, and clasps

The 4925 predates the later numbered bracelet system. A 19mm rivet Oyster is period-correct in principle, but the cited Baer & Bosch AN3907 example carries a 7205 with a 1967 clasp date, so that bracelet is a later refit. Bracelet originality needs case and clasp evidence; the bracelet reference alone is not proof of original delivery.

  • 7205 rivet Oyster bracelet, a service-era refit, Baer & Bosch lot AN3907
    7205 rivet Oyster bracelet, a service-era refit, Baer & Bosch lot AN3907
  • Folded Oyster clasp, Rolex coronet stamp, Baer & Bosch lot AN3907
    Folded Oyster clasp, Rolex coronet stamp, Baer & Bosch lot AN3907

Special branches

The Battle of Britain commemoration

Modern histories often say that Hans Wilsdorf named the Air-King for RAF pilots and the Battle of Britain. No Wilsdorf statement, period Rolex advertisement or other primary source cited on this page confirms that explanation. It remains an attributed origin story.

Air-Lion, Air-Tiger and Air-Giant

The Air-Lion, Air-Tiger and Air-Giant names appear on several early Air references. Siems publishes a side-by-side photograph identifying all three on reference 4365, while 4444 and 4647 examples show other case and movement combinations. The names and references should therefore be recorded separately on each watch.

The cited 4444 Air-Lion example has a steel case with solid-gold bezel and crown and a 17-jewel manual movement. Foundwell catalogues a 4647 Air-Lion from around 1947 with a Hunter Precision movement. These are examples, not a complete census of the sister names.

The cited histories place Air-Lion, Air-Tiger and Air-Giant outside the continuing Rolex Air-King line by the early 1950s. Tudor Air-Tiger examples from around 1959 and 1964 are documented separately; they do not establish a direct corporate continuation of the original naming story.

Early-1945 dials without SWISS MADE

A small early-production sub-variant is reported without “SWISS MADE” at the bottom edge. Time-Wire records the variant, but the available sources do not establish the reason for the omission or its exact date range.

Historical market and auction record

Sale Lot Year Reference details Result
Sotheby's New York Watches 190 2020 4925 c.1956, case 354,085, silvered dial with applied Arabic numerals, alpha hands, mechanical 17-jewel ROW Est. USD 5,000–7,000, did not sell
Antiquorum Geneva 382 2002 Generic Air-King Super Precision 1950s (5500-era cal 1530, mis-attributed to the early Air-King launch) Catalogue text contests the 1945 launch consensus
Baer & Bosch AN3907 2019 4925 with refreshed silvered dial, applied gold-tone Arabic and arrowhead hour markers; on later Oyster rivet 7205 (1967 clasp date — service-era refit)
Baer & Bosch 3189 2019 4925 with silvered dial, applied gold Arabic and arrowhead indexes

The cited auction record is small. Sotheby's lot 190 (2020) did not sell at its USD 5,000–7,000 estimate, while the Baer & Bosch lots provide additional photographed examples. Auction visibility cannot establish how many 4925 watches survive or how many were originally made.

Authentication

The 4925 is about 80 years old, and service or dial work is possible on any surviving example. A clean dial is not proof of replacement, and patina is not proof of originality. Check the printing, applied markers, hand set, case marks and movement together.

The case interior may carry the 4925 reference, a case number and a Roman-quarter code. Sotheby's lot 190 has case number 354,085 and is catalogued c.1956, but one case number cannot define a hard range. A later number should prompt a check of the case, movement, dial and service history rather than an automatic rejection.

The movement and case should be assessed together. A 4925 example with caliber 1030, 1530 or 1520 would need a service or re-case explanation because the cited 4925 examples use the 10½-ligne Hunter family; the movement must be inspected before making that call. The “stamped ROW” marking documented on Sotheby's lot 190 is evidence for that lot, not a universal requirement.

Bracelets provide limited dating evidence. Baer & Bosch lot AN3907 is on a 7205 with a 1967 clasp date, and the cited record contains few bracelets from the 4925 production window. Authenticate the watch head and movement first, then treat the bracelet as supplementary evidence.

Related references

See also the Air-King family index, movement reference, bracelet & clasp guide, and serial numbers by year.

  • Rolex 4925 Air-King
    Rolex 4925 Air-King
  • Hunter-family movement in a Rolex 4925
    Hunter-family movement
  • Silvered late 4925 dial, case 354,085
    Silvered late dial
  • 7205 rivet bracelet on a 4925 service refit
    Later bracelet refit

Sources

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