Reference:6611: Difference between revisions

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Day-Date → 6611

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 add an earlier example: Phillips dates one gold 6611 to 1956. Rolex dates the Day-Date’s debut to 1956; reference-level start dates remain unsettled.

The 6611 is associated with the 1055/1055B movement generation, the “Superlative Chronometer Officially Certified” dial wording, and early President-bracelet fitment. Phillips lot 41 for the earlier 6511 records a President bracelet, placing published evidence before the 6611. Steel school watches and prototypes form a separate, disputed record; the article describes them apart from ordinary gold production.

Core facts

detail	documented description
reference	6611; fluted bezel
family	Day-Date, second-generation 66xx group
date range	Histories commonly give 1957–59. Phillips dates case 214,124 to 1956. Steel school-watch catalogues give conflicting dates; they leave the commercial production span uncertain.
movement	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	36mm, screw-down Oyster case in the cited lots
metals documented	Yellow, pink and white gold. Rolex describes the Day-Date line as precious-metal only; the steel watches are presented separately as school pieces or prototypes.
bezel	Fluted, often called “reeded” or “Millerighe” in catalogues
crystal	Plastic/acrylic in the Phillips 6611 catalogue record
dial text	“Superlative Chronometer Officially Certified” in cited gold and steel examples; German wording also appears on Phillips lot 50
bracelet	Auction records document President bracelets on individual examples; original delivery must be assessed watch by watch
sub-variant label	Auction and collector literature uses “6611B” for later examples, including the white-gold Phillips watch. The suffix’s meaning remains undocumented in the Rolex factory material reviewed.

Place in the line

Rolex dates the Day-Date debut to 1956. Sotheby’s account describes the 6510 and 6511 as the first pair and says they were replaced after one year by the 6611. Other histories commonly place the 6611 at 1957. Phillips, however, dates case 214,124 to 1956. That catalogue date anchors one watch to 1956; the reference’s production boundaries remain uncertain.

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. The cited record leaves the exact 6611 changeover and a three-year run unconfirmed.

Production outline

The clearest case-number anchors are individual auction records. Phillips lists yellow-gold case 214,124 as a 1956 watch and 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.

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 steel-watch descriptions are separate from the commercial gold 6611 chronology.

Movement notes

Phillips catalogues its 1956 yellow-gold 6611 as caliber 1055 and its 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 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 describe the movement family; the cited sources leave the 6611’s production span and its relationship to the 6510/6511 open.

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. The two catalogue caliber labels remain unresolved; a movement inspection or factory record would be needed to identify either steel watch more firmly.

Dial map

The cited watches show several dial configurations, not one fixed layout:

example	catalogue description
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.
Phillips, lot 154, case 401,546	Pale-champagne pie-pan dial, no diamonds or luminous dots, with leaf-shaped hands and black enamel centres.
Antiquorum, lot 136, movement 386,339	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.
Antiquorum, steel lot 37	Satiné silver dial with tritium-coated steel indexes and hands, as described by the house. Its model and movement attribution remain disputed.
Antiquorum, 6611B lots	Published examples include pink-gold cases with black dials, one with baguette diamond markers, and a separate silvered dial with pink-gold indices.

Dial detail from the Serpico y Laino 6611B, with English chronometer wording.

Phillips 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.

Case, bezel, crystal and crown

Phillips and Antiquorum describe 36mm cases with fluted bezels, screw-down crowns and backs. Phillips specifies a plastic crystal on lot 50. Rolex’s history page records gold and platinum within the Day-Date line. The 6611 lots reviewed here document yellow, pink and white gold; a platinum example remains unverified.

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 records reviewed leave separate case variants unconfirmed.

Bracelets and clasps

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.

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 bracelet guide covers component dating and fitment.

Special branches

Steel school watches and prototypes

Auction records describe steel Day-Dates, though their grouping and reference attributions remain disputed. 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.

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; the exact count remains uncertain.

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 designation

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. Rolex’s factory material reviewed here leaves the suffix’s status as a separate case reference unresolved.

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 documents one regional configuration; it cannot be generalized to every 6611B.

White-gold 6611B with a pale-champagne dial
Pink-gold 6611B with black dial and baguette markers
Yellow-gold 6611B with tropical-toned dial

Auction record

The table gives sale totals where the auction houses published them. Several reviewed lot pages omit the result.

sale record	catalogue details and result
Phillips, Glamorous Day-Date, 2015, lot 50	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. Result omitted from the lot page reviewed.
Antiquorum, 2002, lot 37	Steel school watch catalogued as 6611, circa 1959, with 1963 caseback dedication; caliber listed as 1556. Sold CHF 50,600.
Antiquorum, 2013, lot 573	Steel, case number unrecorded; auction title says 1954 and catalogue lists caliber 1066. Sold CHF 25,000.
Antiquorum, 2024, lot 202	Pink-gold 6611B, case 425,488; black dial with baguette diamond markers; estimate USD 28,400–52,000. Result omitted from the lot page reviewed.
Antiquorum, 2023, lot 46	Pink-gold 6611B, case 311,781; black dial described as “Spanish calendar.” Sold EUR 12,350.
Antiquorum, 2017, lot 165	Pink-gold 6611B, case 384,689; silvered dial with pink-gold indices. Result omitted from the lot page reviewed.
Antiquorum, 2016, lot 552	Yellow-gold 6611B, case 397,072; champagne dial. Result omitted from the lot page reviewed.
Bonhams, 2020, lot 81	Yellow-gold 6611B with a tropical-toned champagne dial and red leather strap. Sold GBP 5,687.50.
Monaco Legend, 2024, lot 110	Steel prototype, case 99,272; catalogued as 6511. Official results PDF gives EUR 1,196,000 including premium and VAT; prototype result, excluded from standard-production price comparisons.

Related references

6510: smooth-bezel launch reference
6511: fluted-bezel launch reference
6612: smooth-bezel second-generation sibling
6613: gem-set-bezel sibling
1803: successor generation
Day-Date family guide
Movements
Serial numbers
Bracelets and clasps

Gallery

Yellow-gold 6611 with fluted bezel
Dial detail
Pink-gold 6611
White-gold 6611B
Pink-gold 6611B with black diamond-marker dial
Yellow-gold 6611B with tropical-toned dial

Sources

@@ Line 19: / Line 19: @@
 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 add an earlier example: [https://www.phillips.com/detail/rolex/CH080115/50 Phillips dates one gold 6611 to 1956]. Rolex dates the Day-Date’s debut to 1956; reference-level start dates remain unsettled.
-The 6611 is associated with the 1055/1055B movement generation, the “Superlative Chronometer Officially Certified” dial wording, and early President-bracelet fitment. [Phillips lot 41 for the earlier 6511 records a President bracelet], placing published bracelet evidence before the 6611. Steel school watches and prototypes form a separate, disputed record; the article describes them apart from ordinary gold production.
+The 6611 is associated with the 1055/1055B movement generation, the “Superlative Chronometer Officially Certified” dial wording, and early President-bracelet fitment. [https://www.phillips.com/detail/rolex/CH080115/41 Phillips lot 41 for the earlier 6511 records a President bracelet], placing published evidence before the 6611. Steel school watches and prototypes form a separate, disputed record; the article describes them apart from ordinary gold production.
 ==Core facts==