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{{DISPLAYTITLE:Rolex 6511 Day-Date}}
{{DISPLAYTITLE:Rolex Day-Date 6511}}
{{#seo:
{{#seo:
|title=Rolex 6511 Day-Date — The Fluted-Bezel 1956 Original, Caliber 1055, Jubilee Bracelet | Rolexopedia
|title=Rolex Day-Date 6511 — Fluted Bezel, Dials and Auction Records | Rolexopedia
|description=The 6511 is the fluted-bezel half of the original 1956 Day-Date, sibling to the smooth-bezel 6510. First-generation caliber 1055, 36mm 18k gold Oyster on a Jubilee bracelet, pre-SCOC dial. The fluted bezel became the Day-Date signature; the President bracelet arrives a year later with the 6611.
|description=The fluted-bezel member of the early Day-Date pair. Auction records document varied dials, gold cases, conflicting movement labels and mixed bracelet fitments.
|keywords=Rolex 6511, Day-Date, fluted bezel, caliber 1055, Jubilee bracelet, 6510, 6611, Basel 1956
|keywords=Rolex, Day-Date, 6511, 6510, caliber 1055, Millerighe, President bracelet
|image=Ref 6511 hero.webp
|image=Ref 6511 hero.webp
|image_alt=Rolex Day-Date 6511 in yellow gold on a Jubilee bracelet
|image_alt=Rolex Day-Date 6511 in yellow gold with fluted bezel
|type=Article
|type=Article
|og_type=article
|og_type=article
|published_time=2026-06-02T21:30:08Z
|published_time=2026-06-02T21:30:08Z
|modified_time=2026-08-04T00:14:16Z
|modified_time=2026-09-23T03:32:11Z
|robots=index,follow,max-image-preview:large
|robots=index,follow,max-image-preview:large
}}
}}
 
<small>[[Reference:day-date|Day-Date]] → '''6511''</small>
<small>[[Reference:day-date|Day-Date]] › '''6511'''</small>
 
<div class="rp-lead">
<div class="rp-lead">
[[File:Ref 6511 hero.webp|thumb|center|640px|alt=Rolex Day-Date 6511 in 18k yellow gold on a Jubilee bracelet — the fluted Millerighe bezel that became the Day-Date signature.|Rolex Day-Date 6511 in 18k yellow gold on a Jubilee bracelet — the fluted Millerighe bezel that became the Day-Date signature.]]
[[File:Ref 6511 hero.webp|thumb|center|640px|alt=Rolex Day-Date 6511 in yellow gold with fluted bezel|Rolex Day-Date 6511 in yellow gold with fluted bezel]]
</div>
</div>


The 6511 is the fluted-bezel half of the original Day-Date. Rolex showed it at the Basel Fair in 1956 next to the smooth-bezel [[Reference:6510|6510]]; the two references are mechanically identical and parted only by the finish of their bezels. The fluted bezel the 6511 carried became the visual signature of the Day-Date and has stayed on the model for seventy years. The 6510's smooth bezel did not survive the originals era. Both wear the first-generation caliber 1055, and both launched on a Jubilee bracelet rather than the President — the bracelet that gives the line its nickname arrives a year later with the 6611.
The 6511 is the fluted-bezel member of the first Day-Date pair, alongside the smooth-bezel 6510. Rolex dates the Day-Date launch to 1956, while [https://www.phillips.com/detail/rolex/CH080115/40 Phillips catalogs two 6511 cases] as made in 1955. The surviving catalogues show yellow- and pink-gold cases, several dial layouts, and conflicting movement and bracelet descriptions. Those details belong to individual watches; they do not establish one fixed specification for the whole reference.
 
The cataloged run lasts a single year before the 6611 takes over. Surviving cases push the production window earlier than the launch itself. The two earliest documented examples were made in 1955, ahead of the Basel debut. The patent history, the origin of the Presidential nickname, and the full originals-era roster belong to the [[Reference:6510|6510]] entry.
 


==Core facts==
==Core facts==
Line 34: Line 29:
| 6511
| 6511
|-
|-
| family
| model
| Day-Date
| Day-Date, with the day spelled out at 12 and date at 3
|-
|-
| catalogue debut
| bezel
| Basel Fair 1956
| fluted; often called “Millerighe” in auction catalogues
|-
|-
| production
| launch
| 1956–1957 cataloged; earliest documented cases made 1955
| [https://www.rolex.com/about-rolex/history/1953-1967 Rolex dates the Day-Date debut to 1956]; references 6510 and 6511 are commonly treated as the launch pair
|-
|-
| movement
| production dates
| caliber 1055, first generation (no Microstella, no COSC, gradual midnight changeover, pre-SCOC dial line)
| Auction catalogues date 6511 examples to 1955 and 1956. Published histories commonly give a short 1956–57 run; no factory production record in the sources below fixes the full span.
|-
|-
| case
| case
| 36mm 18k gold Oyster — yellow gold (production-volume), pink gold (uncommon), white gold (rare, disputed at launch)
| 36mm tonneau-shaped Oyster case in the cited lots; screw-down crown and caseback described by Antiquorum
|-
|-
| crystal
| materials documented below
| acrylic
| 18ct yellow gold and 18ct pink gold
|-
| movement
| Catalogue labels conflict: several lots state 1055, while Phillips lot 40 states 1555. Check the movement in the individual watch.
|-
|-
| bezel
| dial wording
| fluted ("Millerighe")
| Examples include red “DAY-DATE,” “Officially Certified Chronometer,” and a pink dial catalogued without a chronometer line
|-
|-
| bracelet
| bracelet
| Jubilee (the President bracelet arrives with the 6611 in 1957)
| Auction lots describe a President, Jubilee, Big Logo, and leather strap; these listings do not establish a single original-delivery bracelet for every watch
|-
|-
| crown
| crystal
| Twinlock screw-down
| Plastic/acrylic is reported for this period; the cited early lot descriptions do not all identify the crystal material
|-
| sibling
| 6510 (smooth/domed bezel, parallel 1956 launch)
|-
| successor
| 6611 (1957 — Microstella cal 1055B, COSC, President bracelet)
|}
|}


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


The 6510 and 6511 launched together as a bezel-finish pair. Everything else about them matches: the 36mm Oyster case, the Twinlock crown, the acrylic crystal, the first-generation caliber 1055, the Jubilee bracelet, the single cataloged year. The bezel is the one intended difference. The 6510 took the smooth, gently domed bezel; the 6511 took the fluted "Millerighe" bezel, the corrugated edge Rolex had used on the Datejust through the early 1950s. Of the two finishes, the fluted one became the Day-Date's identity, which is why the 6511 reads today as the more familiar of the originals even though the 6510 carries the lower number.
The 6510 and 6511 are usually described as the first Day-Date references, with the smooth or domed bezel on the 6510 and the fluted bezel on the 6511. The intended bezel distinction is clear in collector and auction literature. The records for actual watches also show different dial inscriptions, movement labels, and bracelet combinations, so “the bezel was the only difference” is too broad when applied to surviving examples.


The pair sit apart from the rest of the originals-era cluster on two counts. They are the only Day-Date references to use the first-generation cal 1055, and the only two to ship on the Jubilee. From the 6611 onward the line moves to the Microstella-regulated, COSC-certified second-generation caliber and to the President bracelet, and the "Superlative Chronometer Officially Certified" dial designation appears for the first time. The 6511 is the last fluted-bezel Day-Date made before the President bracelet the design is now inseparable from.
Rolex dates the Day-Date debut and the President bracelet’s unveiling to 1956. Some later accounts associate the bracelet’s first production fitment with the 6611 in 1957. A 1955-dated Phillips 6511 is catalogued with a President bracelet and a clasp stamped 2.57; another 6511 is described with a Jubilee. The clasp dates the bracelet component, not the watch head. The surviving auction descriptions do not settle which bracelet Rolex supplied with each 6511 when new.


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


Rolex debuted the 6510 and 6511 together at the Basel Fair in 1956, but production had already started. The earliest documented 6511 cases, 111,654 and 134,692, were both made in 1955, before the public launch. Case numbers on surfaced examples run from that 1955 cluster up to 166,725 in 1956, a narrow band consistent with a short run. No Rolex archival production figure has surfaced for the reference.
The public launch was in 1956. Phillips dates case 111,654 to the fourth quarter of 1955 and case 134,692 to 1955, placing those watches before the launch. Monaco Legend lists case 111,695 as 1955 in its lot details, although its catalogue prose says 1956. The same house dates case 166,725 to 1956. These are auction-house descriptions of individual pieces, not a serial-number production table.


By 1957 the 6611 replaces the 6511. The upgraded caliber, the President bracelet, and the chronometer-certified dial all arrive together, so the 6511 closes the first Jubilee-and-1055 phase of the Day-Date rather than running alongside its successor. The whole originals-era cluster gives way to the 1803 and its siblings around 1959.
Reference histories commonly place the 6611 from 1957, while some auction descriptions date examples to 1956. The available case and dial records do not provide a precise changeover date. Treat the dates as lot-level estimates and compare the case number, movement, hallmarks, and any supporting papers on the watch itself. The [[Reference:Serial-numbers|serial-number guide]] records the underlying estimates.


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


The 6511 carries the first-generation caliber 1055, the founding day-date complication movement and a caliber it shares only with the 6510. It runs at 18,000 vph (2.5 Hz) on 25 jewels, measures 28.50mm across and about 7.0mm tall, and holds roughly 42 hours. It has no Microstella balance, no COSC certification, and a gradual rather than instant changeover at midnight. The early caliber lacks the stored torque to flip both the day disc and the date through in a single impulse, so the two calendars settle into place over a window either side of twelve. That changeover is the deficiency usually blamed for the reference's single-year life. The 6611's second-generation caliber, internally a 1055B, fixed it in 1957 alongside the free-sprung Microstella balance and COSC certification. The full caliber lineage sits on [[Reference:Movements]].
Auction catalogues identify Cal. 1055 in the Phillips pink-gold lot, Antiquorum’s 2008 yellow-gold lot, and Monaco Legend’s 2023 and 2024 examples. [https://www.phillips.com/detail/rolex/CH080115/40 Phillips lists Cal. 1555] for its 1955 yellow-gold case 111,654. That entry conflicts with the 1055 descriptions, but the catalogue alone does not show whether it is a typographical error, a later movement, or a different identification. The article keeps Phillips’ wording rather than silently correcting it.


A 1956 example was catalogued at auction with a rhodium-plated cal. 1055, oeil-de-perdrix decoration, straight-line lever escapement, monometallic balance adjusted to temperatures and five positions, shock protection, and a self-compensating Breguet balance spring. Those details fit the 6511's odd place in the line, technically ambitious and chronometer-minded but still one generation short of the Microstella-regulated caliber that made the Day-Date formula stable.
The [[Reference:Movements|movement reference]] describes the 1055 family and its disputed details. Antiquorum’s 2008 description calls its 1055 free-sprung and specifies a Breguet balance spring; the movement article records that this feature is not settled across the first-generation examples. Do not infer an individual watch’s movement or balance from its reference number alone.
 
The dial designation on the 6511 is pre-SCOC, reading either "Superlative Chronometer by Official Test" or "Officially Certified Chronometer" depending on the example; the four-line "Superlative Chronometer Officially Certified" block is the 6611's introduction. Auction catalogues occasionally mis-state the caliber. Phillips listed the movement of its 1955 yellow-gold lot as a 1555, a caliber that did not exist until the 1803 era; a watch of this date carries the 1055.


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


[[File:Ref 6511 dial.webp|thumb|right|250px|alt=6511 pre-SCOC dial|The pre-SCOC dial reading "Officially Certified Chronometer", with the full-word day aperture at twelve. Image via Antiquorum.]]
The documented watches do not share one fixed dial layout. Auction descriptions and photographs identify these examples:
 
Surfaced 6511 examples spread across several factory dial colours, all sharing the period layout: the full-word day aperture at twelve, the date at three under a Cyclops, applied faceted gold indices, dauphine or alpha hands, and radium lume.
 
The red printing carries information beyond colour. The 1955 yellow-gold example with case 111,654 places the red "Day-Date" signature at six o'clock and pairs it with a red date wheel, while other early examples move toward the more familiar chronometer text hierarchy. The 6511 dial map is therefore less settled than later Day-Dates. Rolex was still deciding where the model name, chronometer line, and calendar colour belonged on a flagship calendar dial.


{| class="wikitable"
{| class="wikitable"
|-
|-
! dial
! lot
! indices / detail
! catalogue description
! chronometer line
|-
! documented on
| Phillips, 2015, lot 40; case 111,654
| Champagne/gold dial with red “Day-Date” text at 6 and a red date wheel; the catalogue dates the case to Q4 1955 and lists Cal. 1555.
|-
|-
| champagne / gold
| Phillips, 2015, lot 41; case 134,692
| applied faceted gold batons, red printed "Day-Date", red date wheel
| Pink dial with no chronometer-certification line; the lot description also records red-and-black date numerals and “Day-Date” text at 12.
| pre-SCOC
| yellow gold (Phillips 2015 lot 40)
|-
|-
| silvered / white
| Antiquorum, 2008, lot 81
| applied faceted gold batons, red "Day-Date"
| White dial with “Officially Certified Chronometer,” applied gold batons, luminous dots and alpha hands. Antiquorum graded the dial separately; its catalogue wording is not proof that every detail is original.
| "Officially Certified Chronometer"
| yellow gold (Antiquorum 2008 lot 81; Monaco Legend 2024 lot 220)
|-
|-
| black gloss / lacquer
| Monaco Legend, 2024, lot 220; case 166,725
| applied gold indices, radium plots
| Silver/white dial with red “DAY-DATE” text and “50 m = 165 ft” depth marking. The catalogue also notes luminous dots.
| pre-SCOC
| less common; yellow and pink gold
|-
|-
| pink
| Monaco Legend, 2023, lot 22; case 111,695
| red-and-black date
| Grey/patinated dial and Portuguese day disc; the listing says the hour markers have no luminous dots. Its year field and catalogue prose disagree.
| none printed
| pink gold (Phillips 2015 lot 41)
|}
|}


The pink-gold Phillips lot is the clearest evidence that some early dials carry no chronometer line at all, a pre-certification quirk rather than a refinish. A small number of examples add a depth rating to the dial. One Monaco Legend yellow-gold lot reads "50 m = 165 ft" beneath the centre, a holdover from period Oyster dial practice. Day discs follow the retail market: English is the rule, and a Portuguese-calendar disc is documented on at least one yellow-gold example. Grey and tropical-brown dials surface on aged examples, the result of radium oxidation and lacquer breakdown over seventy years rather than a separate factory finish; black-dial pink-gold examples that have gone tropical command their own following.
[[File:Ref 6511 dial.webp|thumb|right|250px|alt=Close view of a Rolex 6511 dial with the day display and chronometer wording|Antiquorum lot 81 dial detail, showing the full-word day and “Officially Certified Chronometer” line.]]
 
The “factory dial” labels in sale descriptions need to stay attached to the lot. One catalogue grades its dial as only good, while another calls a grey dial patinated. A colour change or a rare-looking line of text does not by itself establish a factory variant. The auction records above document configurations; they are not a complete dial census.
 
==Case, bezel and crown==


==Case, bezel, crystal, and crown==
The auction houses describe the 6511 as a 36mm, tonneau-shaped Oyster case with a fluted bezel. Antiquorum’s lot 81 calls its case three-body and lists a screwed-down crown and caseback; Phillips describes its 1955 example as thicker and more curved than contemporary Datejust cases, with a rounded screw-down back. Those are descriptions of catalogued examples, not a complete case-construction specification for every 6511.


The 6511 uses the 36mm three-piece Oyster case that becomes the Day-Date standard for the next five decades: screw-down Twinlock crown, screw-down caseback, acrylic crystal. The case is the same one the 6510 wears; the bezel is what sets the reference apart.
The bezel is also called “Millerighe” in period and collector descriptions. Use “fluted” as the plain description; the Italian term refers to its closely spaced ridges. Yellow- and pink-gold cases are represented in the auction records below. Rolex’s company history describes the Day-Date at launch as available in 18ct gold or platinum, but the lots cited here do not establish which metals were offered specifically under reference 6511.


That bezel is the fluted "Millerighe," the finely corrugated ring Rolex carried over from the early Datejust. Descriptions of the early pattern vary between fluted and a tighter "coin-edge" cut, though both labels point at the same physical bezel. The flutes are cut into solid 18k gold matching the case. This is the bezel that defines the Day-Date silhouette, and the 6511 is where it enters the line.
==Bracelets and clasps==


The metals are where the sources genuinely disagree. Yellow gold is the production-volume case material and pink gold is confirmed but uncommon, the pink-gold Phillips lot settling that variant directly. White gold and platinum are contested: Fratello lists both among the originals' metals, while Rolex Magazine limits the 1956 launch to 18k pink and yellow gold, and no white-gold or platinum 6511 has surfaced in the auction record. The documented platinum piece of the originals era is the diamond-set 6612, not a 6511.
Rolex says the President bracelet was made specially for the Day-Date and unveiled in 1956. The 6511 auction records show why fitment needs to be checked watch by watch: Phillips catalogues case 134,692 on a President bracelet with a clasp stamped 2.57; Monaco Legend describes case 166,725 on a Jubilee; and its 2023 case 111,695 was offered on a leather strap with a separate yellow-gold Big Logo bracelet listed among the accessories. Bonhams records another 6511 with a gold brick-link bracelet hallmarked 1959, three years after its stated 1956 Glasgow import mark.


==Bracelets, end links, and clasps==
A bracelet or clasp date belongs to that component. It does not date the watch head or prove original delivery. The [[Reference:Bracelets|bracelet guide]] explains the distinction.


[[File:Ref 6511 bracelet.webp|thumb|right|250px|alt=6511 yellow-gold Jubilee bracelet|The 18k yellow-gold Jubilee bracelet — the period-correct fitment before the President bracelet arrived with the 6611.]]
[[File:Ref 6511 bracelet.webp|thumb|right|250px|alt=Gold bracelet shown with a Rolex 6511|Case and bracelet detail in the Amsterdam Vintage Watches 6511 listing; it illustrates one surviving combination, not factory delivery for every watch.]]


The period-correct 6511 fitment is the Jubilee, the five-link bracelet Rolex had used as its house luxury band since the late 1940s. A Monaco Legend yellow-gold lot still wearing its original yellow-gold Jubilee is the cleanest confirmation. The President bracelet, the three-link semi-circular band designed for this watch, does not arrive until the 6611 in 1957, and here the sources split: Fratello describes the originals as delivered on the President under an earlier name, while Monochrome and the surfaced examples place them on the Jubilee. The Basel-era advertising reproduced by Rolex Magazine shows the first Day-Date on a Jubilee and gives the 1956 launch as 18k pink or yellow gold on that bracelet, with the President added the following year.
==Steel prototype attribution==


In practice the bracelet on a surviving 6511 proves little. Confirmed lots turn up on Presidents, on "Big Logo" bracelets, and on later brick-link bands — a Bonhams example wears an 18ct bracelet hallmarked 1959, three years after the case. These are period swaps and service replacements; the clasp code dates the bracelet, not the watch head.
Monaco Legend catalogued case 99,272 as a steel 6511 prototype and describes it with a white-gold bezel and a riveted Oyster bracelet. Other published histories associate the small group of steel Day-Date prototypes with reference 6611. The available record does not resolve the individual reference attribution. Keep this piece out of the standard 6511 specification and production-date range unless stronger factory documentation appears.


==Auction record==
==Auction record==


The 6511 is the better-documented of the two originals at auction, helped by Phillips's inaugural watch sale. Confirmed lots:
The table records sale-house descriptions and results. Where the house’s lot page and results PDF disagree, both are shown.


{| class="wikitable"
{| class="wikitable"
|-
|-
! sale
! sale record
! date
! catalogue details and result
! metal
|-
! result
| Phillips, “Glamorous Day-Date,” 2015, lot 40
! notes
| Case 111,654; 18ct yellow gold; dated Q4 1955; 36mm; red “Day-Date” text and red date wheel; movement listed as 1555. Sold for CHF 191,000.
|-
|-
| Phillips, Glamorous Day-Date, Geneva, lot 40
| Phillips, “Glamorous Day-Date,” 2015, lot 41
| 9 May 2015
| Case 134,692; 18ct pink gold; dated 1955; pink dial without chronometer line; Cal. 1055; President bracelet with clasp stamped 2.57. Sold for CHF 56,250.
| yellow gold
| CHF 191,000
| case 111,654 (Q4 1955), full set with guarantee dated 7 May 1957, wallet and box; highest standard-gold result and earliest documented case
|-
|-
| Phillips, Glamorous Day-Date, Geneva, lot 41
| Antiquorum New York, 2008, lot 81
| 9 May 2015
| Yellow gold; dated 1956; 36mm; Cal. 1055; white dial, “Officially Certified Chronometer”; sold for USD 24,000.
| pink gold
| CHF 56,250
| case 134,692 (1955), pink dial with no chronometer line; confirms the pink-gold variant
|-
|-
| Monaco Legend, Exclusive Timepieces 35, lot 220
| Bonhams London, 2004, lot 156
| 19 Oct 2024
| Yellow gold; Glasgow import mark dated 1956; Cal. 1055; bracelet later hallmarked 1959. Lot did not sell.
| yellow gold
| EUR 50,700
| case 166,725 (1956), original yellow-gold Jubilee, "50 m = 165 ft" dial
|-
|-
| Monaco Legend, Exclusive Timepieces 31, lot 22
| Monaco Legend, 2023, lot 22
| 22 Apr 2023
| Case 111,695; listing field says 1955 while catalogue text says 1956; grey/patinated dial, Portuguese day disc; leather strap with Big Logo bracelet listed as accessory. Sold for EUR 33,750.
| yellow gold
| EUR 35,100
| case 111,695 (1956), grey patinated dial, Portuguese day disc
|-
|-
| Antiquorum, Revolution, New York, lot 81
| Monaco Legend, 2024, lot 220
| 17 Apr 2008
| Case 166,725; dated 1956; yellow gold; Cal. 1055; 36mm; red model text and depth marking; Jubilee bracelet. The [https://www.monacolegendauctions.com/auction/exclusive-timepieces-35/lot-220 lot page reports EUR 48,750]; the [https://www.monacolegendauctions.com/writable/media/auction/0035-0000/result_0035.pdf sale-results PDF reports EUR 50,700] including premium and VAT.
| yellow gold
| USD 24,000
| "Officially Certified Chronometer" dial; billed as the first yellow-gold 6511 at the house
|-
|-
| Bonhams, London, lot 156
| Monaco Legend, 2024, lot 110, steel prototype
| 23 Nov 2004
| Case 99,272; catalogue attributes it to 6511; result PDF reports EUR 1,196,000 including premium and VAT. The lot page currently displays EUR 1,150,000. Reference attribution and published price differ across the house’s records; this is not a standard-production comparison.
| yellow gold
| unsold
| Glasgow import mark 1956; later 1959-hallmarked bracelet
|}
|}


A clean standard-gold 6511 has settled into roughly the EUR 35,000–55,000 band in recent sales, with the Phillips full-set yellow-gold lot a clear outlier on the strength of its papers and pre-launch date. Pink-gold and tropical-dial examples have also come up at Christie's and Antiquorum, though those results are less firmly documented.
==Related references==


One result sits outside the band entirely. Monaco Legend sold a steel 1955 prototype with a tropical dial and a gold bezel for EUR 1,196,000 in October 2024, an example from John Goldberger's collection published in Pucci Papaleo Editore's ''Day-Date — The Presidential Rolex'' (Spin Edizioni, 2015). Its reference is disputed: Monaco Legend catalogued it as a 6511, while Sotheby's and Monochrome attribute the five known steel pre-launch prototypes to the 6611. Either way it is a record-tier one-off with no bearing on the standard-production market.
* [[Reference:6510|6510]]: smooth-bezel member of the launch pair
* [[Reference:6611|6611]]: later launch-generation reference
* [[Reference:day-date|Day-Date family guide]]: wider chronology and shared history
* [[Reference:Movements|Movements]]: caliber descriptions and conflicts
* [[Reference:Serial-numbers|Serial numbers]]: case-number date estimates
* [[Reference:Bracelets|Bracelets]]: bracelet and clasp identification


== Related references ==
==Gallery==


* [[Reference:6510|Day-Date 6510]] — 1956–1957
<gallery mode="packed" heights="180">
* [[Reference:6611|Day-Date 6611]] — 1957–1959
File:Ref 6511 hero.webp|Rolex Day-Date 6511, yellow gold with fluted bezel
* [[Reference:6612|Day-Date 6612]] — Early President (1957–1959)
File:Ref 6511 dial.webp|Dial detail
* [[Reference:6612B|Day-Date 6612B]] — 1957–1959
File:Ref 6511 bracelet.webp|Bracelet detail
* [[Reference:1803|Day-Date 1803]] — Fluted President (1960–1977)
</gallery>
* [[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]].


== 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", Rolex]
* [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://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://robbreport.com/style/watch-collector/lists/rolex-day-date-guide-1237586374/ Robb Report editorial, "The Rolex Day-Date: a Guide to Everything You Need to Know", Robb Report]
* [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://italianwatchspotter.com/the-history-of-the-rolex-day-date/?lang=en Italian Watch Spotter editorial, "The History of the Rolex Day-Date", Italian Watch Spotter]
* [https://www.collectorsquare.com/en/watches/rolex/day-date/ref-rolex-6511/lpi Collectors Square editorial, "Rolex Day-Date Ref. 6511 — auction price index and lot listings", Collectors Square]
* [https://www.phillips.com/detail/rolex/CH080115/40 Phillips (in association with Bacs & Russo), "Rolex Ref. 6511, yellow gold, Phillips Glamorous Day-Date lot 40", Phillips, 2015-05-09]
* [https://www.phillips.com/detail/rolex/CH080115/40 Phillips (in association with Bacs & Russo), "Rolex Ref. 6511, yellow gold, Phillips Glamorous Day-Date lot 40", 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/CH080115/41 Phillips (in association with Bacs & Russo), "Rolex Ref. 6511, pink gold, Phillips Glamorous Day-Date lot 41", Phillips, 2015-05-09]
* [https://catalog.antiquorum.swiss/en/lots/rolex-lot-204-81 Antiquorum, "Rolex Ref. 6511, yellow gold, Antiquorum Revolution: The Evolution of the Rolex Sport Watch lot 81", Antiquorum, 2008-04-17]
* [https://catalog.antiquorum.swiss/en/lots/rolex-lot-204-81 Antiquorum, "Rolex Ref. 6511, yellow gold, Antiquorum Revolution: The Evolution of the Rolex Sport Watch lot 81", Antiquorum, 2008-04-17]
* [https://www.bonhams.com/auctions/10769/lot/156/ Bonhams, "Rolex Ref. 6511, 18ct gold, Glasgow import mark 1956, Bonhams lot 156", Bonhams, 2004-11-23]
* [https://www.bonhams.com/auctions/10769/lot/156/ Bonhams, "Rolex Ref. 6511, 18ct gold, Glasgow import mark 1956, Bonhams lot 156", Bonhams, 2004-11-23]
* [https://www.monacolegendauctions.com/auction/exclusive-timepieces-31/lot-22 Monaco Legend Auctions, "Rolex Ref. 6511, yellow gold, Monaco Legend Exclusive Timepieces 31 lot 22", Monaco Legend Auctions, 2023-04-22]
* [https://www.monacolegendauctions.com/auction/exclusive-timepieces-35/lot-220 Monaco Legend Auctions, "Rolex Ref. 6511, yellow gold on Jubilee, Monaco Legend Exclusive Timepieces 35 lot 220", Monaco Legend Auctions, 2024-10-19]
* [https://www.monacolegendauctions.com/auction/exclusive-timepieces-35/lot-220 Monaco Legend Auctions, "Rolex Ref. 6511, yellow gold on Jubilee, Monaco Legend Exclusive Timepieces 35 lot 220", Monaco Legend Auctions, 2024-10-19]
* [https://www.monacolegendauctions.com/auction/exclusive-timepieces-31/lot-22 Monaco Legend Auctions, "Rolex Ref. 6511, yellow gold, Monaco Legend Exclusive Timepieces 31 lot 22", Monaco Legend Auctions, 2023-04-22]
* [https://www.monacolegendauctions.com/writable/media/auction/0035-0000/result_0035.pdf "Monaco Legend Exclusive Timepieces 35, official results", Monaco Legend Auctions]
* [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.collectorsquare.com/en/watches/rolex/day-date/ref-rolex-6511/lpi Christie's, "Rolex Ref. 6511, pink gold black tropical dial, Christie's Watches Online Geneva", Christie's, 2021-11-16]
* [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.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]


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

Revision as of 03:33, 23 September 2026

Day-Date → '6511

Rolex Day-Date 6511 in yellow gold with fluted bezel
Rolex Day-Date 6511 in yellow gold with fluted bezel

The 6511 is the fluted-bezel member of the first Day-Date pair, alongside the smooth-bezel 6510. Rolex dates the Day-Date launch to 1956, while Phillips catalogs two 6511 cases as made in 1955. The surviving catalogues show yellow- and pink-gold cases, several dial layouts, and conflicting movement and bracelet descriptions. Those details belong to individual watches; they do not establish one fixed specification for the whole reference.

Core facts

detail value
reference 6511
model Day-Date, with the day spelled out at 12 and date at 3
bezel fluted; often called “Millerighe” in auction catalogues
launch Rolex dates the Day-Date debut to 1956; references 6510 and 6511 are commonly treated as the launch pair
production dates Auction catalogues date 6511 examples to 1955 and 1956. Published histories commonly give a short 1956–57 run; no factory production record in the sources below fixes the full span.
case 36mm tonneau-shaped Oyster case in the cited lots; screw-down crown and caseback described by Antiquorum
materials documented below 18ct yellow gold and 18ct pink gold
movement Catalogue labels conflict: several lots state 1055, while Phillips lot 40 states 1555. Check the movement in the individual watch.
dial wording Examples include red “DAY-DATE,” “Officially Certified Chronometer,” and a pink dial catalogued without a chronometer line
bracelet Auction lots describe a President, Jubilee, Big Logo, and leather strap; these listings do not establish a single original-delivery bracelet for every watch
crystal Plastic/acrylic is reported for this period; the cited early lot descriptions do not all identify the crystal material

Place in the line

The 6510 and 6511 are usually described as the first Day-Date references, with the smooth or domed bezel on the 6510 and the fluted bezel on the 6511. The intended bezel distinction is clear in collector and auction literature. The records for actual watches also show different dial inscriptions, movement labels, and bracelet combinations, so “the bezel was the only difference” is too broad when applied to surviving examples.

Rolex dates the Day-Date debut and the President bracelet’s unveiling to 1956. Some later accounts associate the bracelet’s first production fitment with the 6611 in 1957. A 1955-dated Phillips 6511 is catalogued with a President bracelet and a clasp stamped 2.57; another 6511 is described with a Jubilee. The clasp dates the bracelet component, not the watch head. The surviving auction descriptions do not settle which bracelet Rolex supplied with each 6511 when new.

Production outline

The public launch was in 1956. Phillips dates case 111,654 to the fourth quarter of 1955 and case 134,692 to 1955, placing those watches before the launch. Monaco Legend lists case 111,695 as 1955 in its lot details, although its catalogue prose says 1956. The same house dates case 166,725 to 1956. These are auction-house descriptions of individual pieces, not a serial-number production table.

Reference histories commonly place the 6611 from 1957, while some auction descriptions date examples to 1956. The available case and dial records do not provide a precise changeover date. Treat the dates as lot-level estimates and compare the case number, movement, hallmarks, and any supporting papers on the watch itself. The serial-number guide records the underlying estimates.

Movement notes

Auction catalogues identify Cal. 1055 in the Phillips pink-gold lot, Antiquorum’s 2008 yellow-gold lot, and Monaco Legend’s 2023 and 2024 examples. Phillips lists Cal. 1555 for its 1955 yellow-gold case 111,654. That entry conflicts with the 1055 descriptions, but the catalogue alone does not show whether it is a typographical error, a later movement, or a different identification. The article keeps Phillips’ wording rather than silently correcting it.

The movement reference describes the 1055 family and its disputed details. Antiquorum’s 2008 description calls its 1055 free-sprung and specifies a Breguet balance spring; the movement article records that this feature is not settled across the first-generation examples. Do not infer an individual watch’s movement or balance from its reference number alone.

Dial map

The documented watches do not share one fixed dial layout. Auction descriptions and photographs identify these examples:

lot catalogue description
Phillips, 2015, lot 40; case 111,654 Champagne/gold dial with red “Day-Date” text at 6 and a red date wheel; the catalogue dates the case to Q4 1955 and lists Cal. 1555.
Phillips, 2015, lot 41; case 134,692 Pink dial with no chronometer-certification line; the lot description also records red-and-black date numerals and “Day-Date” text at 12.
Antiquorum, 2008, lot 81 White dial with “Officially Certified Chronometer,” applied gold batons, luminous dots and alpha hands. Antiquorum graded the dial separately; its catalogue wording is not proof that every detail is original.
Monaco Legend, 2024, lot 220; case 166,725 Silver/white dial with red “DAY-DATE” text and “50 m = 165 ft” depth marking. The catalogue also notes luminous dots.
Monaco Legend, 2023, lot 22; case 111,695 Grey/patinated dial and Portuguese day disc; the listing says the hour markers have no luminous dots. Its year field and catalogue prose disagree.
Close view of a Rolex 6511 dial with the day display and chronometer wording
Antiquorum lot 81 dial detail, showing the full-word day and “Officially Certified Chronometer” line.

The “factory dial” labels in sale descriptions need to stay attached to the lot. One catalogue grades its dial as only good, while another calls a grey dial patinated. A colour change or a rare-looking line of text does not by itself establish a factory variant. The auction records above document configurations; they are not a complete dial census.

Case, bezel and crown

The auction houses describe the 6511 as a 36mm, tonneau-shaped Oyster case with a fluted bezel. Antiquorum’s lot 81 calls its case three-body and lists a screwed-down crown and caseback; Phillips describes its 1955 example as thicker and more curved than contemporary Datejust cases, with a rounded screw-down back. Those are descriptions of catalogued examples, not a complete case-construction specification for every 6511.

The bezel is also called “Millerighe” in period and collector descriptions. Use “fluted” as the plain description; the Italian term refers to its closely spaced ridges. Yellow- and pink-gold cases are represented in the auction records below. Rolex’s company history describes the Day-Date at launch as available in 18ct gold or platinum, but the lots cited here do not establish which metals were offered specifically under reference 6511.

Bracelets and clasps

Rolex says the President bracelet was made specially for the Day-Date and unveiled in 1956. The 6511 auction records show why fitment needs to be checked watch by watch: Phillips catalogues case 134,692 on a President bracelet with a clasp stamped 2.57; Monaco Legend describes case 166,725 on a Jubilee; and its 2023 case 111,695 was offered on a leather strap with a separate yellow-gold Big Logo bracelet listed among the accessories. Bonhams records another 6511 with a gold brick-link bracelet hallmarked 1959, three years after its stated 1956 Glasgow import mark.

A bracelet or clasp date belongs to that component. It does not date the watch head or prove original delivery. The bracelet guide explains the distinction.

Gold bracelet shown with a Rolex 6511
Case and bracelet detail in the Amsterdam Vintage Watches 6511 listing; it illustrates one surviving combination, not factory delivery for every watch.

Steel prototype attribution

Monaco Legend catalogued case 99,272 as a steel 6511 prototype and describes it with a white-gold bezel and a riveted Oyster bracelet. Other published histories associate the small group of steel Day-Date prototypes with reference 6611. The available record does not resolve the individual reference attribution. Keep this piece out of the standard 6511 specification and production-date range unless stronger factory documentation appears.

Auction record

The table records sale-house descriptions and results. Where the house’s lot page and results PDF disagree, both are shown.

sale record catalogue details and result
Phillips, “Glamorous Day-Date,” 2015, lot 40 Case 111,654; 18ct yellow gold; dated Q4 1955; 36mm; red “Day-Date” text and red date wheel; movement listed as 1555. Sold for CHF 191,000.
Phillips, “Glamorous Day-Date,” 2015, lot 41 Case 134,692; 18ct pink gold; dated 1955; pink dial without chronometer line; Cal. 1055; President bracelet with clasp stamped 2.57. Sold for CHF 56,250.
Antiquorum New York, 2008, lot 81 Yellow gold; dated 1956; 36mm; Cal. 1055; white dial, “Officially Certified Chronometer”; sold for USD 24,000.
Bonhams London, 2004, lot 156 Yellow gold; Glasgow import mark dated 1956; Cal. 1055; bracelet later hallmarked 1959. Lot did not sell.
Monaco Legend, 2023, lot 22 Case 111,695; listing field says 1955 while catalogue text says 1956; grey/patinated dial, Portuguese day disc; leather strap with Big Logo bracelet listed as accessory. Sold for EUR 33,750.
Monaco Legend, 2024, lot 220 Case 166,725; dated 1956; yellow gold; Cal. 1055; 36mm; red model text and depth marking; Jubilee bracelet. The lot page reports EUR 48,750; the sale-results PDF reports EUR 50,700 including premium and VAT.
Monaco Legend, 2024, lot 110, steel prototype Case 99,272; catalogue attributes it to 6511; result PDF reports EUR 1,196,000 including premium and VAT. The lot page currently displays EUR 1,150,000. Reference attribution and published price differ across the house’s records; this is not a standard-production comparison.

Related references

Gallery

  • Rolex Day-Date 6511, yellow gold with fluted bezel
    Rolex Day-Date 6511, yellow gold with fluted bezel
  • Dial detail
    Dial detail
  • Bracelet detail
    Bracelet detail

Sources

Retrieved from "https://rolexopedia.net/index.php?title=Reference:6511&oldid=10627"