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Correct early Day-Date bracelet chronology and qualify fitment claims
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{{DISPLAYTITLE:Rolex 6611 Day-Date}}
{{DISPLAYTITLE:Rolex Day-Date 6611}}
{{#seo:
{{#seo:
|title=Rolex 6611 Day-Date — 1055B upgrade and early President fitment | Rolexopedia
|title=Rolex Day-Date 6611 — Fluted-Bezel Second Generation and Auction Records | Rolexopedia
|description=The 6611 is a later fluted-bezel Day-Date, commonly dated from 1957. It carries the upgraded 1055B and SCOC dial wording. Rolex dates the President bracelet to the 1956 launch; auction records show early fitments across 6511 and 6611 examples.
|description=The fluted-bezel 66xx Day-Date. Auction records show gold variants, mixed 1055/1055B labels, varied dials and unresolved steel school-watch attributions.
|keywords=Rolex 6611, Day-Date, President bracelet, Superlative Chronometer Officially Certified, caliber 1055B, Microstella, 6611B, 6510, 6511
|keywords=Rolex, Day-Date, 6611, 6611B, 1055, 1055B, steel school watch, President bracelet
|image=Ref 6611 hero.webp
|image=Ref 6611 hero.webp
|image_alt=Rolex Day-Date 6611 in yellow gold on the President bracelet
|image_alt=Yellow-gold Rolex Day-Date 6611 with fluted bezel
|type=Article
|type=Article
|og_type=article
|og_type=article
|published_time=2026-06-02T21:30:23Z
|published_time=2026-06-02T21:30:23Z
|modified_time=2026-08-04T00:14:44Z
|modified_time=2026-09-23T03:49:54Z
|robots=index,follow,max-image-preview:large
|robots=index,follow,max-image-preview:large
}}
}}
 
<small>[[Reference:day-date|Day-Date]] → '''6611'''</small>
<small>[[Reference:day-date|Day-Date]] › '''6611'''</small>
 
<div class="rp-lead">
<div class="rp-lead">
[[File:Ref 6611 hero.webp|thumb|center|640px|alt=Rolex Day-Date 6611 in 18k yellow gold on the President bracelet — the fluted bezel that the 6611 carried into the second generation. Image via Phillips.|Rolex Day-Date 6611 in 18k yellow gold on the President bracelet — the fluted bezel that the 6611 carried into the second generation. Image via Phillips.]]
[[File:Ref 6611 hero.webp|thumb|center|640px|alt=Yellow-gold Rolex Day-Date 6611 with fluted bezel|Yellow-gold Day-Date 6611 with fluted bezel]]
</div>
</div>


The 6611 is the fluted-bezel member of the later 66xx Day-Date group. Reference histories commonly place it from 1957, after the 6510 and 6511 launch generation. Its updated movement and “Superlative Chronometer Officially Certified” dial wording distinguish it from many earlier examples. Rolex dates the President bracelet’s creation and unveiling to the Day-Date launch in 1956. Phillips also catalogs a 1955-dated 6511 with a President bracelet and clasp stamped 2.57. That lot documents a surviving combination, not original delivery; its clasp stamp dates the bracelet component, not the watch head. The 6611 is strongly associated with the President bracelet, but the sources do not establish it as the first reference to wear one.
The 6611 is the fluted-bezel member of the second Day-Date generation, alongside the smooth-bezel 6612 and gem-set-bezel 6613. Reference histories usually place it from 1957, after the 6510 and 6511 launch pair. Auction catalogues complicate that chronology: [https://www.phillips.com/detail/rolex/CH080115/50 Phillips dates one gold 6611 to 1956], while Rolex gives the Day-Date’s debut year but not a start date for each reference.
 
Within the second-generation cluster the 6611 is the fluted-bezel reference, sitting alongside the smooth-bezel 6612 and the diamond-bezel 6613. It kept the 36mm Oyster case and the 18k gold-only catalogue of the originals, and ran for three years before the 1803 and its siblings replaced the whole group around 1959. The shared origin story (Marc Huguenin's patents, the Presidential nickname, the full cluster roster) belongs to the [[Reference:6510|6510]] entry.


The 6611 is associated with the 1055/1055B movement generation, the “Superlative Chronometer Officially Certified” dial wording, and early President-bracelet fitment. The sources do not support the old claim that this reference introduced the bracelet: [https://www.phillips.com/detail/rolex/CH080115/41 Phillips lot 41 for the 6511 also records a President bracelet]. Steel school watches and prototypes are a separate, disputed record and should not be folded into the ordinary gold production description.


==Core facts==
==Core facts==
Line 29: Line 26:
|-
|-
! detail
! detail
! value
! documented description
|-
|-
| reference
| reference
| 6611
| 6611; fluted bezel
|-
|-
| family
| family
| Day-Date
| Day-Date, second-generation 66xx group
|-
|-
| production
| date range
| 1957–1959
| Histories commonly give 1957–59. Phillips dates case 214,124 to 1956. Auction dates for steel school watches conflict and do not establish the commercial run.
|-
|-
| movement
| movement
| caliber 1055 second generation (1055B) — free-sprung Microstella balance, Breguet overcoil, COSC-certified, instant midnight changeover
| Phillips describes 6611 examples with calibers 1055 and 1055B. Antiquorum’s steel-watch catalogues give 1556 and 1066; those are recorded as catalogue labels, not reconciled factory identifications.
|-
|-
| case
| case
| 36mm 18k gold Oyster — yellow gold, pink gold, white gold
| 36mm, screw-down Oyster case in the cited lots
|-
|-
| crystal
| metals documented
| acrylic
| Yellow, pink and white gold. [https://www.rolex.com/about-rolex/history/1953-1967 Rolex describes the Day-Date line as precious-metal only]; the steel watches are presented separately as school pieces or prototypes.
|-
|-
| bezel
| bezel
| fluted ("Millerighe")
| Fluted, often called “reeded” or “Millerighe” in catalogues
|-
|-
| bracelet
| crystal
| President (strongly associated; earlier fitment is documented on a 6511)
| Plastic/acrylic in the Phillips 6611 catalogue record
|-
|-
| dial designation
| dial text
| "Superlative Chronometer Officially Certified" — the first Rolex dial to carry it
| “Superlative Chronometer Officially Certified” in cited gold and steel examples; German wording also appears on Phillips lot 50
|-
|-
| crown
| bracelet
| Twinlock screw-down
| President examples are documented, but a catalogue listing does not establish original delivery on every watch
|-
| predecessor
| 6511 (fluted) / 6510 (smooth), 1956 launch pair; auction records show both Jubilee and President fitments on 6511 examples
|-
| cluster siblings
| 6612 (smooth bezel), 6613 (diamond bezel)
|-
| successor
| 1803 and the 4-digit era, from c.1959
|-
|-
| sub-variant
| sub-variant label
| 6611B (movement plate about 0.1mm thicker)
| Auction and collector literature uses “6611B” for later examples, including the white-gold Phillips watch. No Rolex factory document in the sources here explains the suffix.
|}
|}


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


The 6611 follows the 6510 and 6511 launch pair. Reference histories commonly date it to 1957, though Sotheby's groups it with the 1956 originals. Rolex dates the President bracelet's creation and unveiling to the 1956 Day-Date launch; Phillips also catalogues a 1955-dated 6511 with a President bracelet and a clasp stamped 2.57. That lot documents a surviving combination, not its original delivery. The bracelet date does not settle the 6611's introduction date.
[https://www.rolex.com/about-rolex/history/1953-1967 Rolex dates the Day-Date debut to 1956]. [https://www.sothebys.com/en/articles/the-rolex-day-date-a-complete-collectors-guide Sotheby’s account] describes the 6510 and 6511 as the first pair and says they were replaced after one year by the 6611. [https://monochrome-watches.com/history-rolex-day-date-1956-present-president-watch-in-depth-review/ Other histories commonly place the 6611 at 1957]. Phillips, however, dates case 214,124 to 1956. That catalogue date belongs to one watch; it does not show when the reference entered or left production.


The reference anchors the second-generation 66xx cluster. The 6611 takes the fluted bezel, the 6612 the smooth bezel, and the 6613 a factory diamond-set bezel; the late 6611B carries a slightly thicker movement plate. The 6510 and 6511 offered nothing equivalent, a two-watch bezel-finish pairing where the 66xx cluster is a proper range. By about 1959 the 1803 and its siblings take over and the Day-Date moves into its long 4-digit era.
The 6611 carries a fluted bezel. The 6612 is the smooth-bezel sibling, and the 6613 has a gem-set bezel. The 1803 appears around 1959–60 in the histories cited here. No factory production ledger in this source set fixes the exact 6611 changeover or a three-year run.


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


The reference kept the 36mm Oyster case and the gold-only catalogue of the originals, and ran for three years. Everything that separated it from them landed in a single step in 1957, which is why the 6611 reads as the start of the modern Day-Date rather than a minor update.
The clearest case-number anchors are individual auction records. [https://www.phillips.com/detail/rolex/CH080115/50 Phillips lists yellow-gold case 214,124 as a 1956 watch] and [https://www.phillips.com/detail/rolex/CH080515/154 white-gold case 401,546 as a 1958 6611B]. Antiquorum dates the Serpico y Laino 6611B by movement number 386,339 to about 1958. These dates fit the commonly published late-1950s chronology, but they are not a serial-number production table.


Case numbers from the auction record sit a little above the originals' range (214,124 on a 1956/57 yellow-gold example, 401,546 on a 1958 white-gold 6611B), consistent with the 1957–1959 window. No Rolex archival production figure has surfaced. The cluster as a whole gives way to the 1803 around 1959, and from that point the President bracelet and the SCOC dial that the 6611 introduced become Day-Date standards.
Two Antiquorum steel school-watch entries carry very different dates. The 2002 lot is catalogued as circa 1959 and has a caseback engraved for the Geneva watchmaking school in 1963. The 2013 lot is described as made in 1954, has no case number, and is called a practice watch in the auction note. Those descriptions cannot establish when the ordinary 6611 entered production.


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


The 6611 carries the second-generation caliber 1055, the version watch registries label 1055B. It keeps the running gear of the first-generation movement (automatic, 25 jewels, 18,000 vph, 28.50mm across) but stands about 0.1mm taller at roughly 7.1mm and adds the two upgrades that matter. The balance becomes free-sprung with Rolex's Microstella regulating screws, paired with a Breguet overcoil, and the movement is COSC chronometer-certified. The midnight changeover becomes instant. Auction descriptions document both 1055 and 1555 labels on 6511 watches, and published accounts disagree on the first-generation production span; the available sources do not establish that the calendar changeover determined the run length. The full caliber lineage sits on [[Reference:Movements]].
[https://www.phillips.com/detail/rolex/CH080115/50 Phillips catalogues its 1956 yellow-gold 6611 as caliber 1055] and its [https://www.phillips.com/detail/rolex/CH080515/154 1958 white-gold 6611B as 1055B]. Antiquorum describes the yellow-gold Serpico y Laino 6611B as caliber 1055. Specialist histories treat the 1055B as the later version associated with the 6611 generation, but the auction houses do not use the suffix consistently.
 
The 1055 generation is described in [https://monochrome-watches.com/history-rolex-day-date-1956-present-president-watch-in-depth-review/ specialist watch histories] as an automatic chronometer movement with a free-sprung Microstella balance; some accounts also specify a Breguet overcoil and an instantaneous day-and-date change. Those features describe the movement family in specialist literature. They do not prove why the reference replaced the 6510/6511 or how long it remained in production.


Auction catalogues mislabel these early movements. Antiquorum's 2002 steel lot lists the caliber as a 1556, a movement that did not exist until the 1803 era; the watch in fact carries the second-generation 1055. The dial text and the construction identify these movements more reliably than a caliber number assigned decades after the fact.
The steel school-watch catalogues should be read as records of what each house published. Antiquorum listed caliber 1556 in 2002 and 1066 in 2013. Phillips’s 1055/1055B gold-watch records do not resolve those steel-watch identifications. I found no movement inspection or Rolex document that would justify silently substituting a different caliber in either steel lot.


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


[[File:Ref 6611 dial.webp|thumb|right|250px|alt=6611 Superlative Chronometer Officially Certified dial|The four-line "Superlative Chronometer Officially Certified" dial the 6611 introduced. Image via Antiquorum.]]
The cited watches show several dial configurations, not one fixed layout:
 
The 6611 introduces the four-line "Superlative Chronometer Officially Certified" text at six o'clock, the first Rolex of any line to carry it. The wording is a direct consequence of the COSC certification the upgraded caliber earned, and it replaces the pre-SCOC lines of the 6510/6511 ("Superlative Chronometer by Official Test" or "Officially Certified Chronometer"). Beyond the text, the dials follow the period layout: the full-word day aperture at twelve, the date at three, applied faceted gold indices, and a shift toward alpha hands where the originals ran dauphine.
 
Hands and lume vary across surviving examples. The yellow-gold Serpico y Laino 6611B was catalogued with luminous alpha hands and applied faceted baton indexes, while the white-gold Phillips 6611B carried non-luminous leaf-shaped hands, black enamel hand centres, and no luminous dots at the hour markers. On these early Day-Dates, dial language, market disc, metal, and lume package move independently.


{| class="wikitable"
{| class="wikitable"
|-
|-
! dial
! example
! indices / detail
! catalogue description
! text
|-
! documented on
| Phillips, lot 50, case 214,124
| German day disc, oversized red “DAY-DATE,” red date numerals, and “SUPERLATIVER CHRONOMETER AMTLICH GEPRÜFT.” Phillips calls the dial probably unique and suggests it may have been made to solicit German-market orders; that purpose is the house’s theory.
|-
|-
| champagne / gold
| Phillips, lot 154, case 401,546
| applied faceted gold batons, pie-pan profile
| Pale-champagne pie-pan dial, no diamonds or luminous dots, with leaf-shaped hands and black enamel centres.
| English SCOC
| yellow gold (Antiquorum 2017 lot 136, Serpico y Laino)
|-
|-
| pale champagne / silvered
| Antiquorum, lot 136, movement 386,339
| applied baton markers, pie-pan, no diamonds
| Matte silver dial with applied gold batons, English chronometer wording, and a Spanish day disc; the retailer name Serpico y Laino is printed on the dial.
| English SCOC
| white gold 6611B (Phillips 2015 lot 154)
|-
|-
| German-script
| Antiquorum, steel lot 37
| German day disc, oversized "DAY-DATE", red date
| Satiné silver dial with tritium-coated steel indexes and hands, as described by the house. Its model and movement attribution remain disputed.
| "Superlativer Chronometer Amtlich Geprüft"
| yellow gold (Phillips 2015 lot 50, probably unique)
|-
|-
| satiné silver
| Antiquorum, 6611B lots
| tritium baton indices
| Published examples include pink-gold cases with black dials, one with baguette diamond markers, and a separate silvered dial with pink-gold indices.
| English SCOC
| steel École prize watch (Antiquorum 2002 lot 37)
|}
|}


The day disc follows the retail market — English, French, German, Italian, Spanish and Portuguese discs are all documented, and the German-script Phillips lot, catalogued as probably unique, was likely built to win orders in German-speaking markets. The 6611 era is also where Arabic day discs first appear: SJX dates the spelled-out-Arabic dials to the late 1950s, with the date wheel kept in the Western "roulette" style, odd numbers in red and even in black. Diamond hour markers belong to the diamond-bezel 6613 and the precious-metal configurations rather than the standard 6611.
[[File:Ref 6611 dial.webp|thumb|right|250px|Dial detail from the Serpico y Laino 6611B, with English chronometer wording.]]


==Case, bezel, crystal, and crown==
Phillips [https://www.phillips.com/detail/rolex/CH080515/154 describes the 6611 as the first Rolex reference with “Superlative Chronometer Officially Certified” on the dial]. The wording appears on several cited examples, including the German-script Phillips dial. The surviving records also show that lume, hand shape, day language, case metal and retailer signature vary by watch. A replacement day disc or dial needs to be assessed on the individual watch.


[[File:Ref 6611 pink-gold.webp|thumb|right|250px|alt=pink-gold 6611|An 18k pink-gold 6611 with a fluted pink-gold bezel and warm radium dial patina.]]
==Case, bezel, crystal and crown==


The 6611 uses the 36mm three-piece Oyster case carried over from the originals: screw-down Twinlock crown, screw-down caseback, acrylic crystal. The bezel is the fluted "Millerighe" in 18k gold matching the case, the finish that became the Day-Date signature and the one that separates the 6611 from its smooth-bezel sibling, the 6612.
Phillips and Antiquorum describe 36mm cases with fluted bezels, screw-down crowns and backs. Phillips specifies a plastic crystal on lot 50. The gold examples in this source set include yellow, pink and white gold; Rolex’s history page says the Day-Date was offered in gold or platinum, but the lots reviewed here do not establish a platinum 6611.


The metals are yellow, pink and white gold. Yellow gold is the common case material; pink and white gold are scarcer, and the white-gold examples are usually diamond-set, which is what made the plain white-gold 6611B at Phillips notable enough to call out. Platinum and factory diamond-set dials are sometimes listed among the cluster's options, but no platinum or factory-diamond 6611 has surfaced at auction — Sotheby's treats the early references as gold only, and the diamond-bezel reference of the cluster is the 6613. The safe reading is that platinum and diamond-set examples belong to the 6613, not the 6611.
[[File:Ref 6611 pink-gold.webp|thumb|right|250px|A pink-gold 6611 with fluted bezel.]]


==Bracelets, end links, and clasps==
Catalogue wording for the 6611B case shape varies. Antiquorum calls case 384,689 “Boitier rond,” while it describes cases 386,339 and 397,072 as tonneau-shaped. These are the houses’ descriptions of individual lots; the terms do not establish separate case variants.


The 6611 is strongly associated with early President bracelet fitment. Rolex dates the bracelet’s creation and unveiling to the 1956 Day-Date launch. Phillips catalogs a 1955-dated 6511 with a President bracelet and clasp stamped 2.57. That record prevents calling the 6611 the first reference to wear it, though it does not establish the 6511 bracelet’s original delivery. The stamp dates the clasp component, not the watch head. One early 6611 example in the record is the German-script Phillips lot. The bracelet is widely attributed to Gay Frères on contract to Rolex, though no primary documentation confirms it. The bracelet's name is older than the watch's: a 1957 Italian newspaper advertisement reproduced by Rolex Magazine already calls it the "President," years before Lyndon Johnson's presidency attached the name to the watch itself in the mid-1960s. The cross-family detail sits on [[Reference:Bracelets]].
==Bracelets and clasps==


The Italian copy describes the Day-Date as solid 18k gold with bracelet "PRESIDENT" 7286/16, and the same Rolex Magazine piece reproduces a 1958 Canary Islands catalogue and a 1959 German advertisement using the President/Präsident bracelet language. The name was a launch-period sales term before it was anything else.
[https://www.rolex.com/about-rolex/history/1953-1967 Rolex says the President bracelet was created specially for the Day-Date and unveiled with the model in 1956]. Phillips lot 50 records a President bracelet on case 214,124, with the clasp stamped 2.57. Phillips also lists a President bracelet on 6511 case 134,692, likewise with a 2.57 clasp. Both are auction descriptions of surviving combinations. The clasp stamp dates the clasp, not the watch head, and neither listing proves original delivery.


As with the originals, the bracelet on a surviving 6611 does not always match the head: clasp date codes date the bracelet, not the watch, and service swaps are common across seventy years.
[https://www.rolexmagazine.com/2021/10/rolex-president-ad-from-1957-uncovered.html A 1957 Italian advertisement reproduced by Rolex Magazine] uses “President” for the bracelet. The bracelet name was in use by then; its precise relationship to the watch’s later nickname is a separate question. The [[Reference:Bracelets|bracelet guide]] covers component dating and fitment.


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


===Steel examples===
===Steel school watches and prototypes===


A small number of 6611s exist in stainless steel, and they are among the most argued-over watches in the Day-Date story. Two overlapping populations sit behind them. One is a set of École d'Horlogerie de Genève prize watches, their casebacks engraved "Ecole d'Horlogerie de Genève – 1963" and given to top graduates of the Geneva watchmaking school; Antiquorum sold one in 2002 and catalogued the reference as 6611 while noting, in the same lot, that the model "was first created under the reference No. 6511." The other is a run of factory prototype or scholar pieces made before the launch, cased without reference numbers.
Steel Day-Dates do appear in auction records, but the sources do not establish one settled group or reference attribution. Antiquorum’s 2002 lot calls a steel watch a 6611, says six were made, dates it circa 1959, and describes it as a prize for Geneva watchmaking-school students. The lot also says the model was first created as reference 6511 and lists caliber 1556. These are Antiquorum’s statements; the same catalogue contains internal dating and reference tensions.


The sources do not agree on how many exist or what to call them. Antiquorum counts six, Monochrome five, and Phillips four; the prize-watch and prototype framings are treated as one population by some and two by others. The most expensive of them, an ex-John Goldberger steel example with case number 99,272, was sold by Monaco Legend in 2024 as a reference 6511, not a 6611, on the strength of its first-generation caliber 1055 and riveted Oyster bracelet. The steel Day-Date is best treated as a disputed branch shared between the two reference numbers rather than a settled 6611 variant.
Antiquorum’s 2013 school-watch lot is also titled 6611, but it gives 1954, has no case number, lists caliber 1066, and says unnumbered steel Day-Dates were donated as practice tools. Phillips later described four steel Day-Date prototypes with 1555-series movements and attributed their origin to Rolex watchmakers. These records concern different descriptions and may not count the same watches. Monochrome reports five steel 6611s; no factory source substantiates that count.


Antiquorum's 2002 lot essay gives one more version of the steel story: it says the six steel watches followed a marketing test in which demand proved stronger for gold, after which Rolex stopped steel production and kept the Day-Date in precious metals. That account comes from the auction house rather than the Rolex archive, but it explains why steel 6611s sit awkwardly between prototype, school-prize watch, and aborted-commercial-reference categories.
The ex-John Goldberger steel watch with case 99,272 was sold by Monaco Legend in 2024 as a 6511. Its 1055 movement and riveted Oyster bracelet support keeping it apart from the later gold 6611 specification, though its prototype reference remains contested in published histories. The steel watches are best recorded by lot and attribution, not used to expand the standard 6611 materials or production range.


===The 6611B===
===The 6611B designation===


[[File:Ref 6611 white-gold.webp|thumb|right|250px|alt=white-gold 6611B|A white-gold 6611B with a pale-champagne pie-pan dial and no diamonds — the rare plain configuration. Image via Phillips.]]
Auction catalogues use “6611B” for several later examples. Phillips applies it to the 1958 white-gold watch with caliber 1055B; Antiquorum uses it for gold and pink-gold watches. In the documented examples, it is useful shorthand for a sub-variant. The available sources do not establish that Rolex treated the suffix as a separate case reference.


A late sub-variant, the 6611B, carries a movement plate about 0.1mm thicker than the standard 6611 — the same plate change that the 1055B caliber designation tracks. It is rare and turns up across metals: a plain white-gold example at Phillips, a Serpico y Laino-retailed yellow-gold example at Antiquorum. The external case is stamped 6611; the "B" appears in service paperwork and registries.
The 6611B records include yellow-, white- and pink-gold cases. The pictured white-gold example has no diamonds; pink-gold lots include both black diamond-marker and silvered dials. The Spanish-market Serpico y Laino watch has a Spanish day disc and a “Big Logo” bracelet that Antiquorum dates to 1958. That listing describes one regional configuration; it does not show that all 6611Bs were made for export.


Antiquorum's 2017 lot records case no. 386,339, a matching Spanish day disc, and a "big logo" Rolex bracelet dated 1958, describing the package as built for the Spanish market. The 6611B is therefore an export-market branch as much as a late movement-code branch.
<gallery mode="packed" heights="180">
File:Ref 6611 white-gold.webp|White-gold 6611B with a pale-champagne dial
File:Ref 6611 pink-gold-diamond.webp|Pink-gold 6611B with black dial and baguette markers
File:Ref 6611 yellow-gold-tropical.webp|Yellow-gold 6611B with tropical-toned dial
</gallery>


[[File:Ref 6611 pink-gold-diamond.webp|thumb|right|250px|alt=pink-gold 6611B with black diamond dial|A pink-gold 6611B with a black dial and baguette diamond hour markers, case 425488. Image via Antiquorum.]]
==Auction record==


A wider search across Antiquorum's own listings turns up five more 6611B examples, extending the documented metal range to pink gold. Two are pink gold with black dials: one set with baguette diamond hour markers (case 425488, Hong Kong 2024), the other catalogued as a second "Spanish calendar" (case 311781, Monaco 2023). A third pink-gold example carries a silvered dial with pink-gold indices (case 384689, Monaco 2017). Two further yellow-gold examples join the Serpico y Laino watch: a champagne dial (case 397072, Geneva 2016) and a tropical-toned champagne dial sold at Bonhams in 2020 (see the Auction record below for results and estimates). Cal. 1055 and 25 jewels, where stated, are consistent across every documented example.
Results below are the auction houses’ published totals. A missing result means the lot page reviewed did not state a sale price; it is not evidence that the watch failed to sell.
 
[[File:Ref 6611 yellow-gold-tropical.webp|thumb|right|250px|alt=yellow-gold 6611B tropical dial|A yellow-gold 6611B with a champagne dial aged to a deep tropical orange, sold at Bonhams in 2020. The round case is clearly visible in this angle.]]
 
Case-shape description is not consistent across these listings. Antiquorum's 2017 pink-gold lot calls its case "Boitier rond" (round case) in its French-language text, while two yellow-gold lots — the Serpico y Laino watch and the 2016 champagne example — both call their cases "tonneau-shaped." Direct photography of the pink-gold diamond-dial example and the Bonhams yellow-gold example both show a round Day-Date-style case, consistent with the base 6611's own case, not a tonneau form. That reads as a catalogue-template inconsistency in Antiquorum's own listings rather than a documented case-shape variant, and is reported here rather than silently resolved.
 
==Auction record==


{| class="wikitable"
{| class="wikitable"
|-
|-
! sale
! sale record
! date
! catalogue details and result
! metal
|-
! result
| Phillips, Glamorous Day-Date, 2015, lot 50
! notes
| Case 214,124; 18k yellow gold; dated 1956; caliber 1055; German-script dial; President bracelet with clasp stamped 2.57. Sold CHF 45,000.
|-
| Phillips, Geneva Watch Auction TWO, 2015, lot 154
| Case 401,546; 18k white gold; dated 1958; caliber 1055B; no diamond markers; leather strap with Hermès buckle. Sold CHF 93,750.
|-
| Antiquorum, 2017, lot 136
| Yellow-gold 6611B; movement 386,339; circa 1958; Serpico y Laino signature, Spanish day disc, and bracelet described as dated 1958. No sale result recorded on the lot page reviewed.
|-
|-
| Phillips, The Geneva Watch Auction TWO, lot 154
| Antiquorum, 2002, lot 37
| 7 Nov 2015
| Steel school watch catalogued as 6611, circa 1959, with 1963 caseback dedication; caliber listed as 1556. Sold CHF 50,600.
| white gold (6611B)
| CHF 93,750
| case 401,546 (1958), pale-champagne pie-pan dial, no diamonds: prized for being plain
|-
|-
| Antiquorum, Exceptional Horological Works of Art, lot 37
| Antiquorum, 2013, lot 573
| 19 Oct 2002
| Steel, no case number; auction title says 1954 and catalogue lists caliber 1066. Sold CHF 25,000.
| stainless steel
| CHF 50,600
| École d'Horlogerie de Genève prize watch, caseback engraved 1963, one of about six steel examples
|-
|-
| Phillips, Glamorous Day-Date, Geneva, lot 50
| Antiquorum, 2024, lot 202
| 9 May 2015
| Pink-gold 6611B, case 425,488; black dial with baguette diamond markers; estimate USD 28,400–52,000. No sale result recorded on the lot page reviewed.
| yellow gold
| CHF 45,000
| case 214,124, German-script SCOC dial, probably unique; President clasp stamped 2.57
|-
|-
| Antiquorum, Important Modern & Vintage Timepieces, Hong Kong, lot 202
| Antiquorum, 2023, lot 46
| 26 Oct 2024
| Pink-gold 6611B, case 311,781; black dial described as “Spanish calendar.” Sold EUR 12,350.
| pink gold (6611B)
| not stated
| case 425488, black dial with baguette diamond hour markers, est. USD 28,400–52,000, no result recorded
|-
|-
| Antiquorum, Important Modern & Vintage Timepieces, Monaco, lot 46
| Antiquorum, 2017, lot 165
| 25 Jul 2023
| Pink-gold 6611B, case 384,689; silvered dial with pink-gold indices. No sale result recorded on the lot page reviewed.
| pink gold (6611B)
| EUR 12,350
| case 311781, black dial, catalogued as a "Spanish calendar"
|-
|-
| Antiquorum, Important Modern & Vintage Timepieces, Monaco, lot 165
| Antiquorum, 2016, lot 552
| 19 Jul 2017
| Yellow-gold 6611B, case 397,072; champagne dial. No sale result recorded on the lot page reviewed.
| pink gold (6611B)
| not stated
| case 384689, silvered dial with pink-gold indices, catalogued as a round case ("Boitier rond")
|-
|-
| Antiquorum, Important Modern & Vintage Timepieces, Geneva, lot 552
| Bonhams, 2020, lot 81
| 13 Nov 2016
| Yellow-gold 6611B with a tropical-toned champagne dial and red leather strap. Sold GBP 5,687.50.
| yellow gold (6611B)
| not stated
| case 397072, champagne dial, catalogued as tonneau-shaped
|-
|-
| Bonhams, Watches and Wristwatches, London Knightsbridge, lot 81
| Monaco Legend, 2024, lot 110
| 21 Jul 2020
| Steel prototype, case 99,272; sold as 6511, not 6611. Official results PDF gives EUR 1,196,000 including premium and VAT; not a standard-production price comparison.
| yellow gold (6611B)
| GBP 5,687.50
| tropical-toned champagne dial, red leather strap
|}
|}


A plain gold 6611 is a comparatively modest buy, with examples clearing in roughly the CHF 12,000–20,000 range; the white-gold 6611B and the steel prize watch are the clear exceptions on rarity. Pink-gold and yellow-gold 6611B examples also appear in the record at Sotheby's. The five additional 6611B lots documented above add concrete data: EUR 12,350 for a pink-gold example and GBP 5,687.50 for a yellow-gold example, both within the plain-gold 6611 price band, while the remaining three carry estimates but no published hammer result. The ex-Goldberger steel example sold for EUR 1,196,000 in 2024, but it was catalogued as a 6511, and as a one-off prototype it sits outside any 6611 price band.
==Related references==


== Related references ==
* [[Reference:6510|6510]]: smooth-bezel launch reference
* [[Reference:6511|6511]]: fluted-bezel launch reference
* [[Reference:6612|6612]]: smooth-bezel second-generation sibling
* [[Reference:6613|6613]]: gem-set-bezel sibling
* [[Reference:1803|1803]]: successor generation
* [[Reference:day-date|Day-Date family guide]]
* [[Reference:Movements|Movements]]
* [[Reference:Serial-numbers|Serial numbers]]
* [[Reference:Bracelets|Bracelets and clasps]]


* [[Reference:6612|Day-Date 6612]]: Early President (1957–1959)
==Gallery==
* [[Reference:6612B|Day-Date 6612B]]: 1957–1959
* [[Reference:6510|Day-Date 6510]]: 1956–1957
* [[Reference:6511|Day-Date 6511]]: 1956–1957
* [[Reference:1803|Day-Date 1803]]: Fluted President (1960–1977)
* [[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]].
<gallery mode="packed" heights="180">
File:Ref 6611 hero.webp|Yellow-gold 6611 with fluted bezel
File:Ref 6611 dial.webp|Dial detail
File:Ref 6611 pink-gold.webp|Pink-gold 6611
File:Ref 6611 white-gold.webp|White-gold 6611B
File:Ref 6611 pink-gold-diamond.webp|Pink-gold 6611B with black diamond-marker dial
File:Ref 6611 yellow-gold-tropical.webp|Yellow-gold 6611B with tropical-toned dial
</gallery>


== Sources ==
== Sources ==


* [https://www.rolex.com/about-rolex/history/1953-1967 Rolex, history 1953–1967: Day-Date and President bracelet launch]
* [https://www.rolex.com/about-rolex/history/1953-1967 "Rolex History: 1953–1967", Rolex]
* [https://www.phillips.com/detail/rolex/CH080115/41 Phillips, 2015, lot 41: 6511 with President bracelet and clasp stamped 2.57]
* [https://www.sothebys.com/en/articles/the-rolex-day-date-a-complete-collectors-guide Sotheby's editorial, "The Rolex Day-Date: A Complete Collector's Guide", Sotheby's]
 
* ''The Vintage Rolex Field Manual'' — Colin A. White, Morning Tundra
* [https://mondanibooks.com/rolex-day-date-history/ ''Rolex Day-Date Volume (Mondani Editore)'' — Mondani Family, Guido Mondani Editore]
* [https://www.puccipapaleo.com/bookstore/day-date/ ''Day-Date — The Presidential Rolex'' — Pucci Papaleo Editore, Spin Edizioni, 2015-05]
* [https://www.sothebys.com/ Sotheby's editorial, "The Rolex Day-Date: A Complete Collector's Guide", Sotheby's]
* [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://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://monochrome-watches.com/more-precious-than-gold-the-rolex-day-date-ref-6611-in-steel/ Monochrome editorial, "More Precious Than Gold! — The Rolex Day-Date ref. 6611 in STEEL", Monochrome Watches]
* [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.fratellowatches.com/rolex-day-date-historical-overview-of-rolexs-flagship/ Fratello editorial, "Rolex Day-Date — Historical Overview Of Rolex's Flagship", Fratello Watches]
* [https://watchbase.com/blog/2015/02/21/rolex-day-date-history WatchBase editorial, "Rolex Day-Date History", WatchBase, 2015-02-21]
* [https://watchbase.com/rolex/caliber/1055b WatchBase, "Rolex caliber 1055B (registry page)", WatchBase]
* [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://watchesbysjx.com/2016/09/hands-on-with-the-rolex-day-date-40-eastern-arabic-middle-east-edition-plus-a-brief-history-of-the-arabic-day-date.html Adel Al-Rahmani with Eric Ku, "A Brief History of the Arabic Day-Date (with the Day-Date 40 Arabic special edition hands-on)", SJX Watches, 2016-09]
* [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://catalog.antiquorum.swiss/en/lots/rolex-lot-31-37 Antiquorum, "Rolex Day-Date Ref. 6611 steel, École d'Horlogerie de Genève prize watch, Antiquorum lot 37", Antiquorum, 2002-10-19]
* [https://www.phillips.com/detail/rolex/CH080115/50 Phillips (in association with Bacs & Russo), "Rolex Ref. 6611 yellow gold, German-script SCOC dial, Phillips Glamorous Day-Date lot 50", Phillips, 2015-05-09]
* [https://www.phillips.com/detail/rolex/CH080115/50 Phillips (in association with Bacs & Russo), "Rolex Ref. 6611 yellow gold, German-script SCOC dial, Phillips Glamorous Day-Date lot 50", Phillips, 2015-05-09]
* [https://www.phillips.com/detail/rolex/CH080115/41 Phillips (in association with Bacs & Russo), "Rolex Ref. 6511, pink gold, Phillips Glamorous Day-Date lot 41", Phillips, 2015-05-09]
* [https://www.phillips.com/detail/rolex/CH080515/154 Phillips (in association with Bacs & Russo), "Rolex Ref. 6611B white gold (no diamonds), Phillips The Geneva Watch Auction TWO lot 154", Phillips, 2015-11-07]
* [https://www.phillips.com/detail/rolex/CH080515/154 Phillips (in association with Bacs & Russo), "Rolex Ref. 6611B white gold (no diamonds), Phillips The Geneva Watch Auction TWO lot 154", Phillips, 2015-11-07]
* [https://catalog.antiquorum.swiss/en/lots/rolex-ref-6611b-lot-307-136 Antiquorum, "Rolex Ref. 6611B yellow gold, Serpico y Laino, English SCOC dial, Antiquorum lot 136", Antiquorum, 2017-05-14]
* [https://catalog.antiquorum.swiss/en/lots/rolex-ref-6611b-lot-307-136 Antiquorum, "Rolex Ref. 6611B yellow gold, Serpico y Laino, English SCOC dial, Antiquorum lot 136", Antiquorum, 2017-05-14]
* [https://catalog.antiquorum.swiss/en/lots/rolex-ref-6611b-day-date-lot-373-202 Antiquorum, "Rolex Ref. 6611B pink gold, black dial with baguette diamonds, case 425488, Antiquorum lot 202", Antiquorum, 2024-10-26]
* [https://catalog.antiquorum.swiss/en/lots/rolex-lot-31-37 Antiquorum, "Rolex Day-Date Ref. 6611 steel, École d'Horlogerie de Genève prize watch, Antiquorum lot 37", Antiquorum, 2002-10-19]
* [https://catalog.antiquorum.swiss/en/lots/rolex-ref-6611b-day-date-lot-362-46 Antiquorum, "Rolex Ref. 6611B pink gold, black dial, 'Spanish calendar,' case 311781, Antiquorum lot 46", Antiquorum, 2023-07-25]
* [https://catalog.antiquorum.swiss/en/lots/rolex-ref-6611-lot-278-573 Antiquorum, "Rolex Ref. 6611 steel school watch, Antiquorum Geneva lot 573", Antiquorum, 2013-11-10]
* [https://catalog.antiquorum.swiss/en/lots/lot-308-165 Antiquorum, "Rolex Ref. 6611B pink gold, round case, case 384689, Antiquorum lot 165", Antiquorum, 2017-07-19]
* [https://www.phillips.com/article/86237716/four-prototype-watches-from-the-geneva-watch-auction-xiv Phillips editorial, "Four Prototype Watches From The Geneva Watch Auction XIV", Phillips, 2021-11-03]
* [https://catalog.antiquorum.swiss/en/lots/rolex-ref-6611b-lot-302-552 Antiquorum, "Rolex Ref. 6611B yellow gold, champagne dial, case 397072, Antiquorum lot 552", Antiquorum, 2016-11-13]
* [https://monochrome-watches.com/more-precious-than-gold-the-rolex-day-date-ref-6611-in-steel/ Monochrome editorial, "More Precious Than Gold! — The Rolex Day-Date ref. 6611 in STEEL", Monochrome Watches]
* [https://www.bonhams.com/auction/25955/lot/81/rolex-an-18k-gold-automatic-calendar-wristwatch-day-date-ref-6611b-circa-1957/ Bonhams, "Rolex ref. 6611B, 18K gold, champagne dial, Watches and Wristwatches lot 81", Bonhams, 2020-07-21]
* [https://catalog.antiquorum.swiss/en/lots/rolex-ref-6611b-day-date-lot-373-202 "Antiquorum Hong Kong, "Important Modern & Vintage Timepieces," Lot 202 — Rolex Day-Date, ref. 6611B, 18K pink gold, black gilt baguette diamond dial", Antiquorum, 2024-10-26]
* [https://catalog.antiquorum.swiss/en/lots/rolex-ref-6611b-day-date-lot-362-46 "Antiquorum Monaco, "Important Modern & Vintage Timepieces," Lot 46 — Rolex Day-Date, ref. 6611B, 18K pink gold, black dial, "Spanish calendar"", Antiquorum, 2023-07-25]
* [https://catalog.antiquorum.swiss/en/lots/lot-308-165 "Antiquorum Monaco, "Important Modern & Vintage Timepieces," Lot 165 — Rolex Day-Date, ref. 6611B, 18K pink gold, round case", Antiquorum, 2017-07-19]
* [https://catalog.antiquorum.swiss/en/lots/rolex-ref-6611b-lot-302-552 "Antiquorum Geneva, "Important Modern & Vintage Timepieces," Lot 552 — Rolex Day-Date, ref. 6611B, 18K yellow gold, champagne dial", Antiquorum, 2016-11-13]
* [https://www.bonhams.com/auction/25955/lot/81/rolex-an-18k-gold-automatic-calendar-wristwatch-day-date-ref-6611b-circa-1957/ "Bonhams, "Watches and Wristwatches," Lot 81 — Rolex Day-Date, ref. 6611B, 18K gold, champagne dial, circa 1957", Bonhams, 2020-07-21]
* [https://www.monacolegendauctions.com/auction/exclusive-timepieces-35/lot-110 Monaco Legend Auctions, "Rolex steel Day-Date prototype sold as Ref. 6511 (ex-Goldberger), Monaco Legend lot 110", Monaco Legend Auctions, 2024-10-19]
* [https://www.monacolegendauctions.com/auction/exclusive-timepieces-35/lot-110 Monaco Legend Auctions, "Rolex steel Day-Date prototype sold as Ref. 6511 (ex-Goldberger), Monaco Legend lot 110", Monaco Legend Auctions, 2024-10-19]
* [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://watchbase.com/rolex/caliber/1055b WatchBase, "Rolex caliber 1055B (registry page)", WatchBase]


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