Jump to content

Reference:6612: Difference between revisions

From Rolexopedia
[checked revision][checked revision]
← Older edit
VisualWikitext
Layout: hero promoted to lead
Add Christies B1055/case evidence; correct reported case sizes
 
(8 intermediate revisions by 2 users not shown)
Line 1: Line 1:
{{DISPLAYTITLE:Rolex 6612 Day-Date}}
{{DISPLAYTITLE:Rolex 6612 Day-Date}}
{{#seo:
{{#seo:
|title=Rolex Day-Date 6612 — Early President, 1957–1959 | Rolexopedia
|title=Rolex Day-Date 6612 — Smooth-bezel early reference | Rolexopedia
|description=The 6612 (1957–1959) is the smooth-bezel Day-Date of the second-generation 66xx cluster, sibling to the fluted 6611 and diamond-bezel 6613. 36mm 18k gold (rare platinum), caliber 1055B with free-sprung Microstella balance, President bracelet, and the "Superlative Chronometer Officially Certified" dial.
|description=The Day-Date 6612 is the smooth-bezel member of the early 66xx series. Auction records document gold and platinum examples from the late 1950s, including several dial and movement descriptions.
|keywords=Rolex 6612, Day-Date, President, smooth bezel, 66xx cluster, 6611, 6613, caliber 1055B, [[Reference:6612B|6612B]], platinum Day-Date
|keywords=Rolex 6612, Day-Date, smooth bezel, 6612B, platinum Day-Date, caliber 1055
|image=Ref 6612 hero.webp
|image=Ref 6612 hero.webp
|image_alt=Rolex Day-Date 6612 in platinum with smooth bezel and grey diamond dial
|image_alt=Rolex Day-Date 6612 in platinum with a smooth bezel and grey dial with diamond markers
|type=Article
|type=Article
|og_type=article
|og_type=article
|published_time=2026-06-07T05:24:12Z
|published_time=2026-06-07T05:24:12Z
|modified_time=2026-08-04T00:14:47Z
|modified_time=2026-09-23T00:00:00Z
|robots=index,follow,max-image-preview:large
|robots=index,follow,max-image-preview:large
}}
}}


<small>[[Reference:day-date|Day-Date]] › '''6612'''</small>
<small>[[Reference:day-date|Day-Date]] → '''6612'''</small>


<div class="rp-lead">
<div class="rp-lead">
[[File:Ref 6612 hero.webp|thumb|center|640px|alt=The 6612 in platinum — smooth bezel, grey dial with diamond markers, on the President bracelet. One of the documented platinum examples. Photo: Phillips / EveryWatch|The 6612 in platinum — smooth bezel, grey dial with diamond markers, on the President bracelet. One of the documented platinum examples. Photo: Phillips / EveryWatch]]
[[File:Ref 6612 hero.webp|thumb|center|640px|alt=Platinum Day-Date 6612 with smooth bezel and diamond-set grey dial|Platinum Day-Date 6612, case 403,680, as catalogued by Phillips in 2015.]]
</div>
</div>


The 6612 is the smooth-bezel member of the Day-Date's second-generation cluster. It arrived in 1957 alongside the fluted [[Reference:6611|6611]] and the diamond-bezel 6613, about a year after the [[Reference:6510|6510]] and [[Reference:6511|6511]] originals, and it carries the same three upgrades that turned the Day-Date into the President: the President bracelet, the "Superlative Chronometer Officially Certified" dial line, and the rebuilt caliber 1055 with a free-sprung Microstella balance. Where the 6611 wears the fluted "Millerighe" bezel, the 6612 wears a plain polished one. That is the whole difference between them.
The 6612 is the smooth-bezel version of the early four-digit Day-Date series, alongside the fluted 6611 and diamond-set 6613. Auction catalogues place examples in the late 1950s and describe both gold and platinum cases. The surviving records do not establish a factory production span or a complete specification for every 6612.
 
The shared origin story — the day-disc patents, the Presidential nickname, the full cluster roster — belongs to the [[Reference:6510|6510]] entry, and the bracelet-and-caliber bundle that defines the cluster is set out on the [[Reference:6611|6611]].
 


==Core facts==
==Core facts==
Line 38: Line 35:
|-
|-
| production
| production
| 1957–1959
| Late 1950s in published reference histories; dated auction examples include 1958 and circa 1959
|-
|-
| movement
| movement
| caliber 1055 second generation (1055B) — free-sprung Microstella balance, Breguet overcoil, COSC-certified, instant midnight changeover
| Auction catalogues describe caliber 1055; some 6612B catalogues use B1055. Registry naming varies.
|-
|-
| case
| case
| 36mm 18k gold Oyster — yellow, pink, white gold; platinum (rare)
| 35–36mm reported in the cited lots; yellow, white and platinum examples documented
|-
|-
| crystal
| crystal
| acrylic
| Plastic (Phillips 2015)
|-
|-
| bezel
| bezel
| smooth (polished)
| Smooth; a 1958 Phillips example has platinum bezel
|-
|-
| bracelet
| bracelet
| President
| President bracelets appear on some examples; original delivery is not established for every watch
|-
| dial designation
| "Superlative Chronometer Officially Certified"
|-
|-
| crown
| calendar
| Twinlock screw-down
| Day display at 12 and date at 3 on documented examples
|-
|-
| predecessor
| related designation
| 6510 (smooth) / 6511 (fluted), 1956 originals
| 6612/B and 6612B appear in auction catalogues; consistent factory meaning for the suffix is not established
|-
| cluster siblings
| 6611 (fluted bezel), 6613 (diamond bezel)
|-
| successor
| 1803 and the 4-digit era, from c.1959
|-
| sub-variant
| 6612B (movement plate about 0.1mm thicker)
|}
|}


==Where it sits in the line==
==Where it sits in the line==


The 6612 belongs to the 66xx cluster that succeeds the 1956 originals around 1957. Within the cluster the bezel is the divider: the 6611 takes the fluted bezel, the 6612 the smooth, and the 6613 a factory diamond-set bezel. The smooth bezel links the 6612 back to the first-generation [[Reference:6510|6510]], the only other early Day-Date to wear one; everything inside the watch is second-generation. By about 1959 the [[Reference:1803|1803]] and its siblings replace the whole cluster and the Day-Date settles into its long 4-digit era.
Phillips describes the early 66xx group as 6611 with a fluted bezel, 6612 with a smooth bezel, and 6613 with a diamond-set bezel. That distinction is useful for reading the catalogued examples, though later bezel changes and case markings can complicate an individual watch's history. The 6612 follows the smooth-bezel 6510 in appearance; the movement and dial descriptions in 6612 auction records differ from those of the first-generation 6510.


Dating the cluster is not quite unanimous. Sotheby's groups the 66xx references with the 1956 launch, while Monochrome places them at 1957. The 1957 reading is the common one and matches the President bracelet's own introduction.
Rolex dates the Day-Date's debut to 1956 but does not give dates for individual references. Collector histories commonly place the 6611–6613 group around 1957–1959. Dated 6612-family auction examples cited here run from 1958 to circa 1959; that is a record of catalogued watches, not a production ledger. The four-digit 1800 series appears in the following period.


==Production outline==
==Production outline==


The 6612 arrived in 1957 with the rest of the cluster, keeping the 36mm Oyster case and the gold-and-platinum catalogue of the period, and ran for about three years.
The dated examples show that the smooth-bezel reference appeared in yellow and white gold as well as platinum. Bonhams catalogued a yellow-gold 6612/8 with serial 446*** as circa 1959. Monaco Legend dated a white-gold 6612B, case 394,866, to 1958 and a platinum 6612B, case 403,679, to 1958. Phillips dated the consecutive platinum case 403,680 to 1958. These are auction-house dates and descriptions; they do not set the first or last year of production.


No Rolex archival production figure has surfaced, and the smooth-bezel 6612 is scarcer in the record than the fluted 6611 — most early Day-Dates that reach the market wear the fluted bezel that became the line's signature. Case numbers fall in the same late-1950s band as the rest of the cluster; the platinum pair below carries numbers around 403,680, consistent with 1958.
The reference is less visible in published auction records than the fluted 6611, but the number of catalogue entries is not a measure of total production. No verified factory production count or complete serial range is available here.


==Movement notes==
==Movement notes==


The 6612 carries the second-generation caliber 1055, the version registries label 1055B, the same movement as the fluted 6611. It keeps the first-generation running gear (automatic, 25 jewels, 18,000 vph, 28.50mm across) and adds the two upgrades that define the cluster: a free-sprung balance with Rolex's Microstella regulating screws paired with a Breguet overcoil, and COSC chronometer certification. The midnight changeover becomes instant, fixing the slow day-and-date roll-over that hobbled the first-generation 1055 and is usually blamed for the one-year run of the 6510 and 6511. The full caliber lineage sits on [[Reference:Movements]].
Auction catalogues do not use one movement label consistently. Phillips lists caliber 1055 in its 1958 platinum 6612. Bonhams lists 1055 in a circa-1959 gold 6612/8. Monaco Legend also lists 1055 for its 6612B examples, while some other catalogues use B1055 or 1055B. Christie’s Dubai lot 65 lists B1055 on a platinum watch whose caseback is stamped 6612 and 6613; the catalogue says earlier Phillips and Sotheby’s entries gave the wrong case number. The standard caliber registry groups the later chronometer-grade movement under 1055B, but the lot descriptions do not show whether each watch retains its original movement. See [[Reference:Movements]] for the broader 1055 record.
 
For an individual watch, record the caliber as engraved or as documented by the source, and keep the suffix in that source's wording. The available catalogues do not support claims that every 6612 has a 1055B, that the date changes at exactly midnight, or that a particular movement label alone proves a production date.


==Dial map==
==Dial map==


The 6612 carries the four-line "Superlative Chronometer Officially Certified" text at six o'clock that the cluster introduced, with the spelled-out day at twelve, the date at three, applied faceted gold indices, and the period's shift toward alpha hands. The printing is gilt, gold text on a glossy lacquered ground, the finish Rolex used before matte printing arrived in the 1960s. Its condition drives value on any surviving example. Day discs follow the retail market — English, French, German, Italian and Spanish discs are all documented across the cluster.
The auction examples show several dial configurations rather than one fixed layout. Phillips's 1958 platinum 6612 has a grey dial with eight round-cut and two baguette-cut diamond markers. Monaco Legend's platinum 6612B, case 403,679, has a yellowed dial and Eastern Arabic day and date discs; the catalogue describes diamond indexes with stones omitted at six and nine. Christie's catalogued a circa-1958 platinum 6612/B, case 382,921, with a matte black dial and baguette diamond indexes. These records establish the described examples, not factory-wide dial rules.


Dials on the 6612 split two ways. The standard configuration is a champagne or silvered dial with applied gold batons. The platinum examples instead carry a grey dial set with round- and baguette-cut diamond markers, the configuration Phillips documented in 2015. Diamond hour markers otherwise belong to the precious-metal and diamond-bezel configurations rather than a standard gold 6612.
Bonhams's circa-1959 yellow-gold 6612/8 is catalogued with a champagne dial and applied faceted batons. Day-disc language and dial furniture should be recorded from the individual watch; a single auction description does not establish which options were available throughout the run.


==Case, bezel, crystal, and crown==
==Case, bezel, crystal, and crown==


The 6612 uses the 36mm three-piece Oyster case shared across the cluster: screw-down Twinlock crown, screw-down caseback, acrylic crystal. The bezel is the plain polished one, the single feature that separates the 6612 from the fluted 6611.
The catalogues report case diameters from 35 to 36mm: Bonhams gives 35mm for its yellow-gold 6612/8, while Phillips, Monaco Legend and Christie’s give 36mm for other examples. They describe smooth bezels. Phillips identifies a plastic crystal on case 403,680, and Bonhams describes a screw-down Oyster crown and caseback on the 6612/8. These records do not establish a single measurement or complete case specification for every watch.


The metals are yellow, pink and white gold, with yellow the common case material. Platinum is the outlier: a pair of 1958 platinum examples with consecutive case numbers is documented, one of which Phillips catalogued as one of only two known. Platinum with a diamond-set dial places these among the scarcest early Day-Dates.
Materials in the records include yellow gold, white gold and platinum. The platinum examples have different case numbers: Phillips's case 403,680 and Monaco Legend's case 403,679 form a consecutive pair; Christie's separately catalogued platinum case 382,921. Phillips called the 403,680 watch one of two platinum examples known in 2015. That historical count should not be repeated as a current census in light of later catalogued examples.


==Bracelets, end links, and clasps==
==Bracelets, end links, and clasps==


The 6612 wears the President, the three-piece semi-circular-link bracelet designed for the Day-Date and introduced with this cluster in 1957. The bracelet's name predates the Johnson-era association: a 1957 Italian advertisement reproduced by Rolex Magazine already calls it the President. The cross-family detail sits on [[Reference:Bracelets]]. As ever, a clasp date code dates the bracelet, not the watch head, and service swaps over seventy years are common.
Phillips's case 403,680 was catalogued on a President bracelet with a clasp stamped 3.59. Monaco Legend describes the 403,679 platinum watch on an unusual tessellated platinum bracelet, not a President bracelet. Bonhams's 6612/8 was catalogued on a gold President bracelet with a clasp dated March 1959. A clasp date belongs to the bracelet, not the watch head; none of these descriptions alone proves original delivery.


==Special branches==
==Special branches==


===Platinum===
===Platinum and gem-set examples===


The platinum 6612 is the reference's headline rarity. Phillips sold a 1958 example, case 403,680, with a grey dial set with eight round-cut and two baguette-cut diamond markers at the Glamorous Day-Date sale in Geneva in May 2015, cataloguing it as one of only two platinum 6612s known and noting that the two carry consecutive case numbers. Collectors know that watch as the "Big Kahuna." A platinum early Day-Date is unusual in any reference; documented in the smooth-bezel 6612, it is among the rarest configurations of the whole 66xx group.
Several auction records document platinum 6612-family watches, with different case numbers and dials. Phillips's 2015 lot 43 is case 403,680, dated 1958, with a grey diamond-set dial. Monaco Legend's 2024 lot 67 is case 403,679, also dated 1958, with Eastern Arabic calendar discs and a tessellated bracelet. Christie's catalogued case 382,921 as a circa-1958 6612/B with a black baguette-diamond dial. The catalogues use 6612, 6612B and 6612/B; they do not establish whether those forms represent distinct factory references.


===The 6612B===
===Case stamped 6612 and 6613===


A late sub-variant, the 6612B, carries a movement plate about 0.1mm thicker than the standard 6612, the same plate change tracked by the 1055B caliber designation and mirrored on the fluted 6611B. The external case is stamped 6612; the "B" appears in service paperwork and registries. It turns up across metals, including a yellow-gold example with a black dial.
Christie’s Dubai catalogue describes a platinum watch as 6612B, with “6612” and “6613” stamped inside the caseback. It notes that Phillips and Sotheby’s had previously catalogued the watch with an incorrect case number. Phillips’s Geneva Watch Auction XIII also describes a separate case with both 6612 and 6613 markings and interprets the 6613 stamp as a later bezel change. These are catalogue interpretations of specific watches; they do not establish a factory 6612/6613 sub-reference.
 
===The 6612B designation===
 
Auction houses apply 6612B to gold and platinum watches, and Christie's also writes 6612/B. Their descriptions document individual watches but do not explain the suffix from a factory source. Some movement references associate a B suffix with a later plate revision, but the auction descriptions cited here identify several 6612B watches simply as caliber 1055. Treat the suffix as a catalogue designation unless the particular watch's movement and case documentation establish more.


==Auction record==
==Auction record==
Line 121: Line 112:
|-
|-
! sale
! sale
! date
! date assigned by catalogue
! metal
! watch
! notes
! result
! result
|-
|-
| Phillips, Glamorous Day-Date, Geneva, lot 43
| [https://www.phillips.com/detail/rolex/CH080115/43 Phillips, Glamorous Day-Date, Geneva, lot 43]
| 9 May 2015
| 1958
| platinum
| Platinum 6612, case 403,680; grey diamond-set dial; President bracelet clasp stamped 3.59
| the "Big Kahuna": case 403,680 (1958), grey dial with eight round-cut and two baguette-cut diamond markers; catalogued as one of two platinum 6612s known, with consecutive case numbers
| CHF 473,000
| CHF 473,000
|-
| [https://www.monacolegendauctions.com/auction/exclusive-timepieces-38/lot-67 Monaco Legend, Exclusive Timepieces 38, lot 67]
| 1958
| Platinum 6612B, case 403,679; Eastern Arabic calendar; tessellated platinum bracelet
| €512,500
|-
| [https://www.monacolegendauctions.com/index.php/auction/exclusive-timepieces-36/lot-26 Monaco Legend, Exclusive Timepieces 36, lot 26]
| 1958
| White-gold 6612B, case 394,866; diamond-set dial; leather strap
| €72,500
|-
| [https://www.bonhams.com/auction/20747/lot/353/ Bonhams, Fine Watches, lot 353]
| circa 1959
| Yellow-gold 6612/8, serial 446***; champagne dial; President bracelet with March 1959 clasp
| £3,000–4,000 estimate
|-
| [https://www.christies.com.cn/en/lot/lot-6590177 Christie's, Important Watches, lot 6590177]
| circa 1958
| Platinum 6612/B, case 382,921; matte black dial with baguette diamond indexes
| Sale result not verified
|}
|}


The platinum "Big Kahuna" carries the reference's one landmark result, CHF 473,000 at Phillips in May 2015, a world record for any Day-Date at the time. Plain gold 6612s trade in the same modest band as the gold 6611, with the smooth bezel making them marginally harder to find; the platinum pair is the clear exception on rarity. Beyond that lot the 6612 has no deep run of results of its own, so the smooth-bezel reference is best read through the cluster it belongs to.
Auction descriptions preserve the house's own reference spelling, dating and movement attribution. Estimates and results are lot-specific and do not define a market range for the reference.


== Related references ==
== Related references ==


* [[Reference:6611|Day-Date 6611]] — 1957–1959
* [[Reference:6611|Day-Date 6611]] (fluted bezel)
* [[Reference:6612B|Day-Date 6612B]] — 1957–1959
* [[Reference:6612B|Day-Date 6612B]] (catalogue designation used for some smooth-bezel examples)
* [[Reference:6510|Day-Date 6510]] — 1956–1957
* [[Reference:6510|Day-Date 6510]] (earlier smooth-bezel reference)
* [[Reference:6511|Day-Date 6511]] — 1956–1957
* [[Reference:6511|Day-Date 6511]] (earlier fluted-bezel reference)
* [[Reference:1803|Day-Date 1803]] — Fluted President (1960–1977)
* [[Reference:1803|Day-Date 1803]] (four-digit successor family)
* [[Reference:18028|Day-Date 18028]] — 1977–1988


See also the [[Reference:day-date|Day-Date family index]], [[Reference:Movements|movement reference]], [[Reference:Bracelets|bracelet & clasp guide]], and [[Reference:Serial-numbers|serial numbers by year]].
See also the [[Reference:day-date|Day-Date family index]], [[Reference:Movements|movement reference]], [[Reference:Bracelets|bracelet and clasp guide]], and [[Reference:Serial-numbers|serial numbers by year]].


== Sources ==
== Sources ==


* ''The Vintage Rolex Field Manual'' — Colin A. White, Morning Tundra
* [https://www.rolex.com/about-rolex/history/1953-1967 Rolex, history 1953–1967] — dates the Day-Date debut to 1956; does not date individual references.
* [https://monochrome-watches.com/history-rolex-day-date-1956-present-president-watch-in-depth-review/ Monochrome editorial, "In-Depth: The History of the Rolex Day-Date, The Presidential Watch", Monochrome Watches]
* [https://www.phillips.com/detail/rolex/CH080115/43 Phillips, Glamorous Day-Date, Geneva, lot 43 (2015)] — platinum 6612 case 403,680; movement 1055; dial, bracelet and clasp description.
* [https://www.sothebys.com/ Sotheby's editorial, "The Rolex Day-Date: A Complete Collector's Guide", Sotheby's]
* [https://content.phillips.com/catalogs/CH080115_catalog.pdf Phillips, Glamorous Day-Date catalogue] — lot 43 details and the 2015 two-example statement.
* [https://www.fratellowatches.com/rolex-day-date-historical-overview-of-rolexs-flagship/ Fratello editorial, "Rolex Day-Date — Historical Overview Of Rolex's Flagship", Fratello Watches]
* [https://www.monacolegendauctions.com/auction/exclusive-timepieces-38/lot-67 Monaco Legend, lot 67] — platinum 6612B case 403,679 and catalogue description.
* [https://watchbase.com/blog/2015/02/21/rolex-day-date-history WatchBase editorial, "Rolex Day-Date History", WatchBase, 2015-02-21]
* [https://www.monacolegendauctions.com/index.php/auction/exclusive-timepieces-36/lot-26 Monaco Legend, lot 26] — white-gold 6612B case 394,866.
* [https://www.rolexmagazine.com/2010/09/1956-very-first-rolex-day-date.html Jake Ehrlich, "1956 — The Very First Rolex Day-Date", Rolex Magazine (Jake's Rolex World), 2010-09]
* [https://www.bonhams.com/auction/20747/lot/353/ Bonhams, lot 353] — yellow-gold 6612/8 catalogued circa 1959.
* [https://www.rolexmagazine.com/2021/10/rolex-president-ad-from-1957-uncovered.html Jake Ehrlich, "Rolex President Ad From 1957 Uncovered", Rolex Magazine (Jake's Rolex World), 2021-10]
* [https://www.christies.com.cn/en/lot/lot-6590177 Christie's, lot 6590177] — platinum 6612/B case 382,921, circa 1958.
* [https://watchbase.com/rolex/caliber/1055b WatchBase, "Rolex caliber 1055B (registry page)", WatchBase]
* [https://onlineonly.christies.com/s/watches-online-dubai-edit/rolex-day-date-ref-6612b-extremely-rare-attractive-platinum-diamond-65/195872 Christie’s Dubai, 6612B lot 65] — B1055 attribution and conflicting 6612/6613 caseback marks; prior catalogue case numbers corrected.
* [https://www.phillips.com/ Phillips Watches Department, "Phillips Glamorous Day-Date Geneva May 2015 lot 43 — platinum 6612", Phillips, 2015-05-09]
* [https://www.phillips.com/detail/rolex/151223 Phillips, Geneva Watch Auction XIII] — describes the 6611/6612/6613 bezel distinctions and discusses later case markings.
* [https://rolexpassionmarket.com/watches/rolex-the-gold-black-day-date-ref-6612b/ Rolex Passion Market editorial, "Rolex Day-Date 6612B Gold Black Dial", Rolex Passion Market]
* [https://monochrome-watches.com/history-rolex-day-date-1956-present-president-watch-in-depth-review/ Monochrome Watches, Day-Date history] — secondary chronology for the 1956 originals and 1957 6611; not a factory 6612 production record.
* [https://www.rolexmagazine.com/2021/10/rolex-president-ad-from-1957-uncovered.html Rolex Magazine, 1957 President bracelet advertisement] — advertisement reproduction; does not establish a bracelet's fitment to an individual watch.


[[Category:Day-Date]]
[[Category:Day-Date]]
[[Category:References]]
[[Category:References]]

Latest revision as of 04:07, 23 September 2026


Day-Date → 6612

Platinum Day-Date 6612 with smooth bezel and diamond-set grey dial
Platinum Day-Date 6612, case 403,680, as catalogued by Phillips in 2015.

The 6612 is the smooth-bezel version of the early four-digit Day-Date series, alongside the fluted 6611 and diamond-set 6613. Auction catalogues place examples in the late 1950s and describe both gold and platinum cases. The surviving records do not establish a factory production span or a complete specification for every 6612.

Core facts

detail value
reference 6612
family Day-Date
production Late 1950s in published reference histories; dated auction examples include 1958 and circa 1959
movement Auction catalogues describe caliber 1055; some 6612B catalogues use B1055. Registry naming varies.
case 35–36mm reported in the cited lots; yellow, white and platinum examples documented
crystal Plastic (Phillips 2015)
bezel Smooth; a 1958 Phillips example has platinum bezel
bracelet President bracelets appear on some examples; original delivery is not established for every watch
calendar Day display at 12 and date at 3 on documented examples
related designation 6612/B and 6612B appear in auction catalogues; consistent factory meaning for the suffix is not established

Where it sits in the line

Phillips describes the early 66xx group as 6611 with a fluted bezel, 6612 with a smooth bezel, and 6613 with a diamond-set bezel. That distinction is useful for reading the catalogued examples, though later bezel changes and case markings can complicate an individual watch's history. The 6612 follows the smooth-bezel 6510 in appearance; the movement and dial descriptions in 6612 auction records differ from those of the first-generation 6510.

Rolex dates the Day-Date's debut to 1956 but does not give dates for individual references. Collector histories commonly place the 6611–6613 group around 1957–1959. Dated 6612-family auction examples cited here run from 1958 to circa 1959; that is a record of catalogued watches, not a production ledger. The four-digit 1800 series appears in the following period.

Production outline

The dated examples show that the smooth-bezel reference appeared in yellow and white gold as well as platinum. Bonhams catalogued a yellow-gold 6612/8 with serial 446*** as circa 1959. Monaco Legend dated a white-gold 6612B, case 394,866, to 1958 and a platinum 6612B, case 403,679, to 1958. Phillips dated the consecutive platinum case 403,680 to 1958. These are auction-house dates and descriptions; they do not set the first or last year of production.

The reference is less visible in published auction records than the fluted 6611, but the number of catalogue entries is not a measure of total production. No verified factory production count or complete serial range is available here.

Movement notes

Auction catalogues do not use one movement label consistently. Phillips lists caliber 1055 in its 1958 platinum 6612. Bonhams lists 1055 in a circa-1959 gold 6612/8. Monaco Legend also lists 1055 for its 6612B examples, while some other catalogues use B1055 or 1055B. Christie’s Dubai lot 65 lists B1055 on a platinum watch whose caseback is stamped 6612 and 6613; the catalogue says earlier Phillips and Sotheby’s entries gave the wrong case number. The standard caliber registry groups the later chronometer-grade movement under 1055B, but the lot descriptions do not show whether each watch retains its original movement. See Reference:Movements for the broader 1055 record.

For an individual watch, record the caliber as engraved or as documented by the source, and keep the suffix in that source's wording. The available catalogues do not support claims that every 6612 has a 1055B, that the date changes at exactly midnight, or that a particular movement label alone proves a production date.

Dial map

The auction examples show several dial configurations rather than one fixed layout. Phillips's 1958 platinum 6612 has a grey dial with eight round-cut and two baguette-cut diamond markers. Monaco Legend's platinum 6612B, case 403,679, has a yellowed dial and Eastern Arabic day and date discs; the catalogue describes diamond indexes with stones omitted at six and nine. Christie's catalogued a circa-1958 platinum 6612/B, case 382,921, with a matte black dial and baguette diamond indexes. These records establish the described examples, not factory-wide dial rules.

Bonhams's circa-1959 yellow-gold 6612/8 is catalogued with a champagne dial and applied faceted batons. Day-disc language and dial furniture should be recorded from the individual watch; a single auction description does not establish which options were available throughout the run.

Case, bezel, crystal, and crown

The catalogues report case diameters from 35 to 36mm: Bonhams gives 35mm for its yellow-gold 6612/8, while Phillips, Monaco Legend and Christie’s give 36mm for other examples. They describe smooth bezels. Phillips identifies a plastic crystal on case 403,680, and Bonhams describes a screw-down Oyster crown and caseback on the 6612/8. These records do not establish a single measurement or complete case specification for every watch.

Materials in the records include yellow gold, white gold and platinum. The platinum examples have different case numbers: Phillips's case 403,680 and Monaco Legend's case 403,679 form a consecutive pair; Christie's separately catalogued platinum case 382,921. Phillips called the 403,680 watch one of two platinum examples known in 2015. That historical count should not be repeated as a current census in light of later catalogued examples.

Bracelets, end links, and clasps

Phillips's case 403,680 was catalogued on a President bracelet with a clasp stamped 3.59. Monaco Legend describes the 403,679 platinum watch on an unusual tessellated platinum bracelet, not a President bracelet. Bonhams's 6612/8 was catalogued on a gold President bracelet with a clasp dated March 1959. A clasp date belongs to the bracelet, not the watch head; none of these descriptions alone proves original delivery.

Special branches

Platinum and gem-set examples

Several auction records document platinum 6612-family watches, with different case numbers and dials. Phillips's 2015 lot 43 is case 403,680, dated 1958, with a grey diamond-set dial. Monaco Legend's 2024 lot 67 is case 403,679, also dated 1958, with Eastern Arabic calendar discs and a tessellated bracelet. Christie's catalogued case 382,921 as a circa-1958 6612/B with a black baguette-diamond dial. The catalogues use 6612, 6612B and 6612/B; they do not establish whether those forms represent distinct factory references.

Case stamped 6612 and 6613

Christie’s Dubai catalogue describes a platinum watch as 6612B, with “6612” and “6613” stamped inside the caseback. It notes that Phillips and Sotheby’s had previously catalogued the watch with an incorrect case number. Phillips’s Geneva Watch Auction XIII also describes a separate case with both 6612 and 6613 markings and interprets the 6613 stamp as a later bezel change. These are catalogue interpretations of specific watches; they do not establish a factory 6612/6613 sub-reference.

The 6612B designation

Auction houses apply 6612B to gold and platinum watches, and Christie's also writes 6612/B. Their descriptions document individual watches but do not explain the suffix from a factory source. Some movement references associate a B suffix with a later plate revision, but the auction descriptions cited here identify several 6612B watches simply as caliber 1055. Treat the suffix as a catalogue designation unless the particular watch's movement and case documentation establish more.

Auction record

sale date assigned by catalogue watch result
Phillips, Glamorous Day-Date, Geneva, lot 43 1958 Platinum 6612, case 403,680; grey diamond-set dial; President bracelet clasp stamped 3.59 CHF 473,000
Monaco Legend, Exclusive Timepieces 38, lot 67 1958 Platinum 6612B, case 403,679; Eastern Arabic calendar; tessellated platinum bracelet €512,500
Monaco Legend, Exclusive Timepieces 36, lot 26 1958 White-gold 6612B, case 394,866; diamond-set dial; leather strap €72,500
Bonhams, Fine Watches, lot 353 circa 1959 Yellow-gold 6612/8, serial 446***; champagne dial; President bracelet with March 1959 clasp £3,000–4,000 estimate
Christie's, Important Watches, lot 6590177 circa 1958 Platinum 6612/B, case 382,921; matte black dial with baguette diamond indexes Sale result not verified

Auction descriptions preserve the house's own reference spelling, dating and movement attribution. Estimates and results are lot-specific and do not define a market range for the reference.

Related references

See also the Day-Date family index, movement reference, bracelet and clasp guide, and serial numbers by year.

Sources

Retrieved from "https://rolexopedia.net/index.php?title=Reference:6612&oldid=10643"