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{{DISPLAYTITLE:Rolex Daytona Glossary}}
{{#seo:
{{#seo:
|title=Rolex Daytona Glossary — Dial Variants, Movement, Bracelet Terms — BezelBase
|title=Rolex Daytona Glossary — Dial Variants, Movement, Bracelet Terms — Rolexopedia
|description=Complete glossary for the Rolex Cosmograph Daytona: Paul Newman Mk1-4, RCO, JPS, Lemon, Big Red, Albino, Patrizzi, Neanderthal, Unicorn, Le Roi Soleil, GT Champion, and every named dial variant across the 1962-2016 manual-wind, Zenith, and in-house cal 4130 generations. Also movement, bracelet, clasp, case, and crystal terms.
|description=Working glossary for Rolex Cosmograph Daytona dial, movement, bracelet, clasp, case, bezel, and crystal terms across the manual-wind, Zenith, and caliber 4130 generations.
|keywords=Rolex Daytona glossary, Paul Newman dial, RCO, Oyster Sotto, JPS, Lemon dial, Big Red, Patrizzi, Sigma, Albino, Neanderthal, Unicorn, Le Roi Soleil, cal 4030, cal 4130, cal 727, Valjoux 72, SEL, Oysterlock, Triplock
|keywords=Rolex Daytona glossary, Paul Newman dial, RCO, Oyster Sotto, JPS, Lemon dial, Big Red, Patrizzi, Sigma, Albino, Neanderthal, Unicorn, Le Roi Soleil, cal 4030, cal 4130, cal 727, Valjoux 72, SEL, Oysterlock, Triplock
|image=Daytona vintage poster.webp
|image=Daytona vintage poster.webp
|type=article
|type=Article
}}
}}


<small>[[Reference:daytona|Daytona]] → '''Glossary'''</small>
<small>[[Reference:daytona|Daytona]] › '''Glossary'''</small>


= Daytona glossary =
<div class="rp-lead">
[[File:Daytona vintage poster.webp|thumb|center|640px|alt=Vintage Rolex Daytona poster|Vintage Rolex Daytona poster]]
</div>


Terms that recur across the Rolex Cosmograph Daytona catalogue — dial variants, movement generations, bracelet and clasp references, case and bezel construction. Each entry links to the reference article where the term is documented in full context.
== Daytona glossary ==
Terms that recur across the Rolex Cosmograph Daytona catalogue: dial variants, movement generations, bracelet and clasp references, case and bezel construction. Each entry links back to the reference where the term is documented in full.


== Dial variants ==
== Dial variants ==
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'''Paul Newman dial.''' Singer-made Cosmograph dial with art-deco block markers, cross-hairs on the sub-dials, and 15/30/45 numerals on the 30-minute register. Fitted to six manual-wind references: [[Reference:6239|6239]], [[Reference:6241|6241]], [[Reference:6262|6262]], [[Reference:6263|6263]], [[Reference:6264|6264]], and [[Reference:6265|6265]]. Full treatment on [[Reference:paul-newman-daytona|Paul Newman Daytona]].
'''Paul Newman dial.''' Singer-made Cosmograph dial with art-deco block markers, cross-hairs on the sub-dials, and 15/30/45 numerals on the 30-minute register. Fitted to six manual-wind references: [[Reference:6239|6239]], [[Reference:6241|6241]], [[Reference:6262|6262]], [[Reference:6263|6263]], [[Reference:6264|6264]], and [[Reference:6265|6265]]. Full treatment on [[Reference:paul-newman-daytona|Paul Newman Daytona]].


'''Mk1 through Mk4.''' Collector shorthand for the four main Paul Newman dial generations. Mk1 has no Daytona line, Mk2 adds it, Mk3 is the Big Eyes generation, and Mk4 is the late narrow-marker run. See [[Reference:paul-newman-daytona#mark-1-through-mark-4-progression|the full progression table]].
'''Mk1 through Mk4.''' Collector shorthand for the four main Paul Newman dial generations. Mk1 has no Daytona line, Mk2 adds it, Mk3 is the Big Eyes generation, and Mk4 is the late narrow-marker run. See [[Reference:paul-newman-daytona#Mark_1_through_Mark_4_progression|the full progression table]].


'''Big Eyes.''' The Mk3 sub-mark of the Paul Newman dial, named for the visually larger sub-dial outer rings. 1969–1972 production.
'''Big Eyes.''' The Mk3 sub-mark of the Paul Newman dial, named for the visually larger sub-dial outer rings. 1969–1972 production.


'''RCO (Rolex Cosmograph Oyster).''' Rare Paul Newman dial where the 12 o'clock text reads "ROLEX COSMOGRAPH OYSTER" with OYSTER printed below Cosmograph rather than above. Documented only on [[Reference:6263|6263]] and [[Reference:6265|6265]]. Also called Oyster Sotto (Italian for "Oyster underneath"). The Oyster Sotto 6263 sold CHF 1,662,500 at Phillips Daytona Ultimatum 2018.
'''RCO (Rolex Cosmograph Oyster).''' Rare Paul Newman dial where the 12 o'clock text reads "ROLEX COSMOGRAPH OYSTER" with OYSTER printed below Cosmograph rather than above. Documented only on [[Reference:6263|6263]] and [[Reference:6265|6265]]. Also called Oyster Sotto (Italian for "Oyster underneath"). The Oyster Sotto 6263 sold CHF 1,662,500 at Phillips Daytona Ultimatum 2018; that is an auction result for one lot, not a reference-wide value.


'''Oyster Sotto.''' Italian collector shorthand for the RCO dial layout. See RCO above.
'''Oyster Sotto.''' Italian collector shorthand for the RCO dial layout. See RCO above.


'''JPS (John Player Special).''' Paul Newman dial on a yellow gold case where the dial is black and sub-dial surrounds and hour markers are gold-toned, echoing the John Player Special-sponsored Lotus F1 team livery of the 1970s. The 14k yellow gold [[Reference:6241|6241]] is the most populous JPS host (fewer than 400 produced, North American market).
'''JPS (John Player Special).''' Paul Newman dial on a yellow gold case with black ground and gold-toned sub-dial surrounds and hour markers, named for the John Player Special-sponsored Lotus F1 team livery of the 1970s. The yellow-gold [[Reference:6241|6241]] is the reference most often associated with the JPS label. Published counts are estimates, not a Rolex production ledger.


'''Lemon dial.''' Yellow lacquer full-dial finish fitted to rare gold-case 6263 and 6265 examples. Per Revolution's 2017 Ridley bench dissection, gold-case Paul Newman Daytonas are always the Lemon variant, with rare RCO exceptions.
'''Lemon dial.''' Yellow lacquer full-dial finish documented on some gold-case Paul Newman Daytonas. The available source set does not support treating every gold-case exotic dial as a Lemon dial.


=== 6263 / 6265 specialty dials ===
=== 6263 / 6265 specialty dials ===


'''Big Red Daytona.''' Standard 6263 dial with "DAYTONA" printed in red block letters above the 6 o'clock sub-register. Introduced ~1976, default 6263 dial by the early 1980s. Paul Newman's own 6263 — a Big Red — sold Phillips NY December 2020 for USD 5.48M. See [[Reference:6263|6263]].
'''Big Red Daytona.''' Standard 6263 dial with "DAYTONA" printed in red block letters above the 6 o'clock sub-register. Specialist and auction sources place the layout in later 6263 production, but they do not establish a single factory changeover year. Paul Newman's own 6263 — a Big Red — sold Phillips NY December 2020 for USD 5.48M. See [[Reference:6263|6263]].


'''Floating Big Red.''' Transitional variant where the DAYTONA text sits visibly further from the sub-dial than on standard Big Red. Rare and commands a meaningful premium.
'''Floating Big Red.''' Transitional layout where the DAYTONA text sits farther from the sub-dial than on a standard Big Red. The name is collector shorthand; a price premium is not assumed here.


'''Small Red.''' Late-1980s variant where the red DAYTONA is rendered in a noticeably smaller font than the Big Red. See [[Reference:6263|6263]] and [[Reference:6265|6265]].
'''Small Red.''' Late-1980s variant where the red DAYTONA is rendered in a noticeably smaller font than the Big Red. See [[Reference:6263|6263]] and [[Reference:6265|6265]].
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'''Sigma dial.''' Dial with σσ symbols flanking SWISS at the 6 o'clock chapter, denoting gold-applied hour markers. Swiss-industry convention for identifying precious-metal components. Appears ~1972–1978 across both [[Reference:6263|6263]] and [[Reference:6265|6265]].
'''Sigma dial.''' Dial with σσ symbols flanking SWISS at the 6 o'clock chapter, denoting gold-applied hour markers. Swiss-industry convention for identifying precious-metal components. Appears ~1972–1978 across both [[Reference:6263|6263]] and [[Reference:6265|6265]].


'''Albino 6263.''' White-on-white monochromatic dial — silver sub-dials on a white base, bearing only "Rolex Oyster Cosmograph" without the standard "Daytona" wording. Three known examples. Most disputed dial in the manual-wind Daytona literature — Hodinkee (Clymer 2013) as factory Rolex variant vs. Perezcope (2025) as 1990s Tom Bolt construction. See [[Reference:6263|6263]].
'''Albino 6263.''' White-on-white monochromatic dial with silver sub-dials and no standard DAYTONA wording. The attribution is disputed: older auction and editorial material treats it as a factory variant, while later research argues for a later construction. The page records the dispute rather than a count of authentic examples. See [[Reference:6263|6263]].


'''Tropical.''' Production-period black dial that oxidised to brown under UV exposure or heat. Not a separate factory variant — aged production dials valued for patina. Distinct from Patrizzi (which affects only sub-dial outer rings).
'''Tropical.''' Production-period black dial that oxidised to brown under UV exposure or heat. These are aged production dials valued for their patina, not a factory variant in their own right. Distinct from Patrizzi, which affects only the sub-dial outer rings.


'''Double Swiss Underline.''' Earliest [[Reference:6239|6239]] production with a line under "SWISS" at the dial base and a second "SWISS" printed just above — radium-era markings transitioning out.
'''Double Swiss Underline.''' Earliest [[Reference:6239|6239]] production with a line under "SWISS" at the dial base and a second "SWISS" printed just above, marking the transition out of radium.


=== 6238 / 6240 specialty dials ===
=== 6238 / 6240 specialty dials ===


'''Neanderthal 6240.''' Disputed dial configuration presented at Phillips Daytona Ultimatum 2018 as the earliest Paul Newman prototype. Perezcope's 2022 forensic dossier argues the dial is a late-1990s construction from a 6238 donor, using contemporaneous evidence from the April 1998 ''Orologi & Market''. Both positions on record. See [[Reference:6240|6240]].
'''Neanderthal 6240.''' Disputed dial configuration presented in 2018 auction material as an early Paul Newman prototype. Later research argues for a later construction using a 6238 donor. Both positions are recorded on [[Reference:6240|6240]].


=== 6265 specialty dials ===
=== 6265 specialty dials ===


'''Unicorn 6265.''' The only known white gold 6265 (case 2877587, manufactured 1970). Sold CHF 5,937,500 at Phillips Daytona Ultimatum 2018 — second-most-expensive Rolex at auction at that point. Perezcope's 2022 Frankenstein analysis disputes authenticity using 2010 IG photographs and millerighe pusher forensics. Both positions on record. See [[Reference:6265|6265]].
'''Unicorn 6265.''' A 6265 catalogued as white gold, case 2877587, sold for CHF 5,937,500 at Phillips Daytona Ultimatum in 2018. Later research disputes the case and pusher evidence, so the “only known” description remains an auction attribution rather than an established production fact. See [[Reference:6265|6265]].


=== Middle Eastern commissions ===
=== Middle Eastern commissions ===


'''Sultan of Oman Khanjar.''' 6263 / 6265 examples carrying the Omani red Khanjar (curved dagger) emblem above the 6 o'clock sub-dial. Made in small numbers for Sultan Qaboos mid-1970s. Some examples carry Asprey signature. A Khanjar 6263 with Asprey signature sold USD 864,521 at Christie's Lesson One, Geneva, November 2013.
'''Sultan of Oman Khanjar.''' 6263 / 6265 examples carrying the Omani red Khanjar (curved dagger) emblem above the 6 o'clock sub-dial. Made in small numbers for Sultan Qaboos in the mid-1970s. Some examples carry Asprey signature. A Khanjar 6263 with Asprey signature sold USD 864,521 at Christie's Lesson One, Geneva, November 2013.


'''UAE Quraysh Hawk.''' 6263 example carrying the UAE military emblem (Hawk of Quraish with Arabic script reading "UAE armed forces") at 6 o'clock. Made for Sheikh Mohammed bin Rashid Al Maktoum during his UAE defence ministry tenure. Phillips Daytona Ultimatum 2018 Lot 13, estimate CHF 200,000–400,000.
'''UAE Quraysh Hawk.''' 6263 example carrying the UAE military emblem (Hawk of Quraish with Arabic script reading "UAE armed forces") at 6 o'clock. Auction catalogues attribute examples to the UAE armed forces and to Sheikh Mohammed bin Rashid Al Maktoum; the available record does not establish a complete issue history. Phillips Daytona Ultimatum 2018 Lot 13, estimate CHF 200,000–400,000.


'''Arabian Knight 6263.''' Eastern Arabic numeral hour markers; white gold quarter-hour markers; Sigma logos at 6 referencing the white gold indices. Phillips Daytona Ultimatum 2018 Lot 21, estimate CHF 1.5M–3.0M. Featured once in print before 2018; no comparable auction precedent.
'''Arabian Knight 6263.''' Eastern Arabic numeral hour markers; white gold quarter-hour markers; Sigma logos at 6 referencing the white gold indices. Phillips Daytona Ultimatum 2018 Lot 21, estimate CHF 1.5M–3.0M. Featured once in print before 2018; no comparable auction precedent.
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=== Zenith era (cal 4030) dial progression ===
=== Zenith era (cal 4030) dial progression ===


'''MK1 Floating Cosmograph Porcelain.''' First-year R-serial (1988) [[Reference:16520|16520]]-generation dial. Extra space between COSMOGRAPH and the next four lines; inverted 6 in hour totaliser at 9 o'clock; porcelain / glossy finish. Most consistently appreciating 16520 variant since 2015.
'''MK1 Floating Cosmograph Porcelain.''' First-year R-serial (1988) [[Reference:16520|16520]] dial with extra space below COSMOGRAPH, an inverted 6 in the 9 o'clock totaliser, and a glossy finish. “Porcelain” is collector terminology for the surface appearance.


'''MK2 Floating 4-Liner.''' L-serial (1989–1990) dial. OFFICIALLY CERTIFIED line missing — dial reads four lines of text instead of five. Documented paired with the early 50-200 "UNITS PER HOUR" bezel in the Cattin Collection photography.
'''MK2 Floating 4-Liner.''' L-serial (1989–1990) dial. OFFICIALLY CERTIFIED line missing — dial reads four lines of text instead of five. Photographed alongside the early 50–200 "UNITS PER HOUR" bezel in Luca Garbati's images of the Cattin Collection.


'''MK3 Inverted 6.''' E/N/X/C-serial (1990–1992). Inverted 6 in the 9 o'clock sub-dial; OFFICIALLY CERTIFIED restored.
'''MK3 Inverted 6.''' E/N/X/C-serial (1990–1992). Inverted 6 in the 9 o'clock sub-dial; OFFICIALLY CERTIFIED restored.
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'''MK4 Corrected 6.''' S/T-serial (1993–1996). Corrected 6 orientation; T SWISS T tritium markings; Patrizzi sub-dial varnish reaction eligibility window starts here.
'''MK4 Corrected 6.''' S/T-serial (1993–1996). Corrected 6 orientation; T SWISS T tritium markings; Patrizzi sub-dial varnish reaction eligibility window starts here.


'''MK5, MK6.''' Late-tritium T/U-serial (1996–1998). Mazzariol's original five-mark typology collapses MK5 and MK6; the seven-mark expansion is working scaffold rather than settled consensus.
'''MK5, MK6.''' Late-tritium T/U-serial (1996–1998). Stefano Mazzariol's original five-mark typology, relayed by Ross Povey in ''Revolution'' (2018), collapses MK5 and MK6 into one; the seven-mark expansion remains contested.


'''MK7.''' U/A/P-serial (1998–2000). Super-LumiNova replaces tritium; SWISS MADE replaces T SWISS T.
'''MK7.''' U/A/P-serial (1998–2000). Super-LumiNova replaces tritium; SWISS MADE replaces T SWISS T.


'''Patrizzi dial.''' Zenith-era dial where the varnish over the silver sub-dial rings turns brown. Named for Osvaldo Patrizzi. Most sources place the window in the mid-1990s. Real Patrizzi ageing is usually uneven across the three sub-dials; a perfectly even effect is a warning sign.
'''Patrizzi dial.''' Zenith-era dial where varnish over the silver sub-dial rings has turned brown. The name refers to Osvaldo Patrizzi. The effect and date window vary; even colour alone cannot authenticate a dial.


'''Darth Vader.''' 16520 variant where the silver sub-dial chapter rings have faded to a near-black tone — the inverse of the Patrizzi browning. Documented by Sotheby's (Orrico 2025).
'''Darth Vader.''' 16520 variant where the silver sub-dial chapter rings have faded to a near-black tone, the inverse of the Patrizzi browning. Documented by Karyn Orrico in Sotheby's Zenith Daytona guide (2025).


'''Le Roi Soleil 16518.''' The only known Van Cleef & Arpels-signed 16518 — locally-printed VCA logo with paint-drip authentication detail, VCA letter-of-provenance with 1995 sale date. Phillips Daytona Ultimatum 2018 Lot 18, estimate CHF 50,000–100,000. See [[Reference:16518|16518]].
'''Le Roi Soleil 16518.''' The only known Van Cleef & Arpels-signed 16518 — locally-printed VCA logo with paint-drip authentication detail, VCA letter-of-provenance with 1995 sale date. Phillips Daytona Ultimatum 2018 Lot 18, estimate CHF 50,000–100,000. See [[Reference:16518|16518]].
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=== In-house cal 4130 era dials ===
=== In-house cal 4130 era dials ===


'''APH error dial.''' 116520 variant with visible kerning gap between "Cosmogr" and "aph" in the dial text — misprint produced by an Asia-Pacific Hong Kong dial batch 2009 onward. Documented by Phillips's Logan Baker. Carries a small market premium today despite being a misprint. See [[Reference:116520|116520]].
'''APH error dial.''' 116520 variant with a visible kerning gap between "Cosmogr" and "aph" in the dial text, first seen on white dials in 2009 and black in 2010. Documented by Phillips's Logan Baker. Any market response is secondary to identifying the dial and its provenance. See [[Reference:116520|116520]].


'''2011 GT Champion 116523.''' Grey-rhodium soleil dial on a G-serial (circa 2010) 116523 presented to TRG / Nadeau Motorsports for their GT-class win at the 2011 Rolex 24 At Daytona. Crown Royal Cask No. 16. Caseback engraved with the 2011 GT Champion mark. See [[Reference:116523|116523]].
'''GT Champion 116523.''' A documented grey-rhodium 116523 associated with The Racer’s Group and the 2011 Rolex 24 at Daytona. The presentation and caseback details belong to that individual watch. See [[Reference:116523|116523]].


'''Mexican red dial.''' Late-production 116528 sub-branch — black lacquer dial with red DAYTONA script more prominent than the standard configuration. See [[Reference:116528|116528]].
'''Mexican red dial.''' Late-production 116528 sub-branch — black lacquer dial with red DAYTONA script more prominent than the standard configuration. See [[Reference:116528|116528]].
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== Movement ==
== Movement ==


'''Valjoux 72.''' Manual-wind chronograph base movement used in the Daytona from [[Reference:6238|6238]] in 1962 through the [[Reference:6263|6263]] / [[Reference:6265|6265]] in 1988. Rolex modifications produced calibres 722, 722-1, and 727 across the generation.
'''Valjoux 72.''' Manual-wind chronograph base movement used in the Daytona from [[Reference:6238|6238]] in 1962 through the [[Reference:6263|6263]] / [[Reference:6265|6265]] in 1988. Rolex modifications produced calibers 722, 722-1, and 727 across the generation.


'''Cal 722.''' Early Rolex designation on the Valjoux 72 base, 18,000 vph. Used in the [[Reference:6238|6238]] and early [[Reference:6239|6239]] production.
'''Cal 722.''' Early Rolex designation on the Valjoux 72 base, 18,000 vph. Used in the [[Reference:6238|6238]] and early [[Reference:6239|6239]] production.
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'''Cal 727.''' Final manual-wind Daytona caliber. The 1969–1970 transition lifted the beat from 18,000 to 21,600 vph. Used in [[Reference:6262|6262]], [[Reference:6263|6263]], [[Reference:6264|6264]], [[Reference:6265|6265]] through 1988. See [[Reference:Movements#cal-727|cal 727]].
'''Cal 727.''' Final manual-wind Daytona caliber. The 1969–1970 transition lifted the beat from 18,000 to 21,600 vph. Used in [[Reference:6262|6262]], [[Reference:6263|6263]], [[Reference:6264|6264]], [[Reference:6265|6265]] through 1988. See [[Reference:Movements#cal-727|cal 727]].


'''Cal 4030 (Zenith Daytona).''' Zenith El Primero base, heavily reworked by Rolex and used from 1988 to 2000. Core points: 28,800 vph, 31 jewels, no date, free-sprung balance, COSC. Published power reserve is usually 52 or 54 hours. See [[Reference:Movements#cal-4030|cal 4030]].
'''Cal 4030 (Zenith Daytona).''' Rolex’s modified version of the Zenith El Primero, used in the 16520 from 1988 to 2000. It runs at 28,800 vph and omits the date; published power-reserve figures vary by source. See [[Reference:Movements#cal-4030|cal 4030]].


'''Cal 4130 (in-house chronograph).''' Rolex's first wholly in-house chronograph movement. Vertical-clutch coupling, column-wheel switching, 72-hour power reserve, 44 jewels, 28,800 vph, COSC. Used 2000–2016 in the 116520 / 116523 / 116528 (and continues in post-2019 ceramic-bezel successors). See [[Reference:Movements#cal-4130|cal 4130]].
'''Cal 4130 (in-house chronograph).''' Rolex’s in-house automatic chronograph with vertical clutch, column wheel, 72-hour power reserve, and 28,800 vph. Used in the 116520, 116523, and 116528 and later Daytona generations with related 4130-family movements. See [[Reference:Movements#cal-4130|cal 4130]].


'''Zenith El Primero base.''' The 1969 Zenith El Primero 400 was the base movement Rolex used for the cal 4030. Rolex slowed it from 36,000 to 28,800 vph, replaced the escapement with a free-sprung Breguet balance, removed the date, and stamped it cal 4030. The Zenith branding never appeared on a Rolex-signed dial.
'''Zenith El Primero base.''' The 1969 Zenith El Primero 400 was the base movement Rolex used for the cal 4030. Rolex reduced it from 36,000 to 28,800 vph, removed the date, and substantially reworked the oscillator, regulation and chronograph train before stamping the movement cal 4030. The Zenith branding never appeared on a Rolex-signed dial.


== Bracelet and clasp ==
== Bracelet and clasp ==
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'''Oyster bracelet.''' Three-link flat construction used across every Daytona generation in various references: 7205 / 7836 / 78350 (manual-wind era), 78360 / 78390 (Zenith era), 78490 (in-house gen 1). See [[Reference:Bracelets|Bracelets]].
'''Oyster bracelet.''' Three-link flat construction used across every Daytona generation in various references: 7205 / 7836 / 78350 (manual-wind era), 78360 / 78390 (Zenith era), 78490 (in-house gen 1). See [[Reference:Bracelets|Bracelets]].


'''SEL (Solid End Link).''' Bracelet construction where the end-link is integral to the first link rather than a separate stamped piece. Introduced on the 16520 at the U-serial (1997–1998) transition and carried forward on every in-house-era Daytona reference.
'''SEL (Solid End Link).''' End link integrated with the first bracelet link rather than a separate stamped component. It appears on late 16520 examples and became standard on later in-house-era Daytona bracelets.


'''78360.''' Heavy-link Oyster bracelet, 1976–1993. Used on the early Zenith [[Reference:16520|16520]] (R-serial through early S-serial 1988–1993).
'''78360.''' Heavy-link Oyster bracelet, 1976–1993. Used on the early Zenith [[Reference:16520|16520]] (R-serial through early S-serial 1988–1993).
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'''78390.''' Zenith-era Oyster successor to the 78360, 1993–2000. Used on the 16520 from S-serial 1993 through end of production.
'''78390.''' Zenith-era Oyster successor to the 78360, 1993–2000. Used on the 16520 from S-serial 1993 through end of production.


'''78490.''' In-house era SEL Oyster bracelet. Used on the [[Reference:116520|116520]] 2000–2016. The 78690 reading appears in some aggregator listings — that number is documented elsewhere as the Explorer 14270 bracelet. The 78490 identification is the multi-source consensus for the 116520.
'''78490.''' In-house era SEL Oyster bracelet. Used on the [[Reference:116520|116520]] 2000–2016. 78690 turns up in some listings, but that reference belongs to the Explorer 14270 bracelet; 78490 is the consensus identification for the 116520.


'''Oysterlock.''' Rolex's safety clasp with a folding cover over a folding clasp. Multiple generations across the Daytona run.
'''Oysterlock.''' Rolex's safety clasp with a folding cover over a folding clasp. Multiple generations across the Daytona run.
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'''Easylink.''' 5mm comfort extension inside the Oysterlock clasp — a lever-and-keeper that gives a micro-adjustment without tools. Arrived on the [[Reference:116520|116520]] around 2002–2003.
'''Easylink.''' 5mm comfort extension inside the Oysterlock clasp — a lever-and-keeper that gives a micro-adjustment without tools. Arrived on the [[Reference:116520|116520]] around 2002–2003.


'''Glidelock.''' Micro-extension mechanism introduced on Submariner-line clasps in 2010. ''The Daytona never adopted Glidelock.'' Easylink is the only on-bracelet adjustment the 116520 generation offered.
'''Glidelock.''' Micro-extension mechanism introduced on Submariner-line clasps in 2010. The Daytona never adopted it; Easylink is the only on-bracelet adjustment the 116520 generation offered.


'''Clasp date code.''' Single-letter code stamped inside the clasp blade. Runs A=1976 through CP=2011 with a 1995–98 overlap window (T/W/U/V/Z). Randomised from 2011 onward. S-prefix marks a service-replacement clasp, not a production year. See [[Reference:Bracelets|Bracelets]] for the full key.
'''Clasp date code.''' Single-letter code stamped inside the clasp blade. Runs A=1976 through CP=2011 with a 1995–98 overlap window (T/W/U/V/Z). Randomised from 2011 onward. S-prefix marks a service-replacement clasp, not a production year. See [[Reference:Bracelets|Bracelets]] for the full key.
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'''Twinlock.''' Earlier screw-down crown sealing on two rubber gaskets. Used on manual-wind Daytona (6239 onward) before the Triplock arrived with the Zenith generation.
'''Twinlock.''' Earlier screw-down crown sealing on two rubber gaskets. Used on manual-wind Daytona (6239 onward) before the Triplock arrived with the Zenith generation.


'''Screw-down pushers.''' Chronograph pushers that lock to prevent accidental actuation underwater. Introduced on the [[Reference:6240|6240]] (1965) and the defining feature of the screw-pusher Oyster Daytona: [[Reference:6240|6240]], [[Reference:6263|6263]], [[Reference:6265|6265]], and every subsequent Daytona reference.
'''Screw-down pushers.''' Chronograph pushers that lock to prevent accidental actuation underwater. Introduced on the [[Reference:6240|6240]] in 1965, and the feature that defines the screw-pusher Oyster Daytona line: the [[Reference:6240|6240]], [[Reference:6263|6263]], [[Reference:6265|6265]], and every subsequent Daytona reference.


'''Pump pushers.''' Non-screw-down chronograph pushers. Used on the earlier [[Reference:6239|6239]], [[Reference:6241|6241]], [[Reference:6262|6262]], and [[Reference:6264|6264]].
'''Pump pushers.''' Non-screw-down chronograph pushers. Used on the earlier [[Reference:6239|6239]], [[Reference:6241|6241]], [[Reference:6262|6262]], and [[Reference:6264|6264]].


'''Engraved metal tachymetre bezel.''' Tachymetre scale engraved directly into the bezel metal (steel or precious metal). Defines the [[Reference:6239|6239]], [[Reference:6262|6262]], [[Reference:6264|6264]], [[Reference:6265|6265]], and the Zenith and in-house gen-1 steel references.
'''Engraved metal tachymetre bezel.''' Tachymetre scale engraved directly into the bezel metal (steel or precious metal). Defines the [[Reference:6239|6239]], [[Reference:6262|6262]], [[Reference:6265|6265]], and the Zenith and in-house gen-1 steel references.


'''Acrylic bezel insert.''' Aluminium insert with the tachymetre printed on acrylic, fitted into the bezel. Defines the [[Reference:6240|6240]], [[Reference:6241|6241]], and [[Reference:6263|6263]].
'''Acrylic bezel insert.''' Black acrylic insert carrying a printed tachymetric scale, fitted into the bezel. Defines the [[Reference:6240|6240]], [[Reference:6241|6241]], [[Reference:6263|6263]], and [[Reference:6264|6264]] — the 6264 is the acrylic-bezel sibling of the engraved-metal [[Reference:6262|6262]].


'''Cerachrom.''' Ceramic bezel introduced with the 116500LN in 2016. ''Out of scope for BezelBase (post-2020 production).'' Every reference in the Daytona line through the 116520 generation uses steel or gold engraved tachymetre bezels, not ceramic.
'''Cerachrom.''' Rolex's ceramic bezel material. It reached the Cosmograph in 2011 on the Everose-gold [[Reference:116515LN|116515LN]], then the platinum [[Reference:116506|116506]] in 2013, and steel in 2016 with the [[Reference:116500LN|116500LN]]. The steel and Rolesor [[Reference:116520|116520]]-generation references kept an engraved metal tachymetre bezel throughout.


'''Acrylic crystal.''' Plexiglass crystal used on every manual-wind Daytona (6238 through 6265). Replaced by sapphire at the 16520 generation (1988).
'''Acrylic crystal.''' Plexiglass crystal used on every manual-wind Daytona (6238 through 6265). Replaced by sapphire at the 16520 generation (1988).
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== Auction landmarks ==
== Auction landmarks ==


'''Phillips Daytona Ultimatum, Geneva, 12 May 2018.''' 32-watch thematic sale curated by Pucci Papaleo with Aurel Bacs at the rostrum. Reset the market ceiling across the manual-wind Daytona category. Highlights: the Unicorn 6265 (CHF 5,937,500), the Neanderthal 6240 (CHF 3,012,500), the Oyster Sotto 6263 (CHF 1,662,500).
'''Phillips Daytona Ultimatum, Geneva, 12 May 2018.''' Thematic sale curated by Pucci Papaleo. Recorded results included the catalogued Unicorn 6265 at CHF 5,937,500, the Neanderthal 6240 at CHF 3,012,500, and an Oyster Sotto 6263 at CHF 1,662,500. Several of these attributions remain disputed.


'''Phillips Winning Icons, New York, 26 October 2017.''' Paul Newman's own 6239 MK1 sold for USD 17,752,500 — the highest price paid for any Rolex at public auction. See [[Reference:paul-newman-daytona|Paul Newman Daytona]].
'''Phillips Winning Icons, New York, 26 October 2017.''' Paul Newman's own 6239 MK1 sold for USD 17,752,500 — the highest price paid for any Rolex at public auction. See [[Reference:paul-newman-daytona|Paul Newman Daytona]].


'''Phillips New York, 12 December 2020.''' Paul Newman's own Big Red 6263, engraved "Drive slowly Dad," sold for USD 5,475,000.
'''Phillips New York, 12 December 2020.''' Paul Newman's own Big Red 6263, its caseback engraved "DRIVE SLOWLY JOANNE" by Joanne Woodward, who bought the watch for him in 1983. Newman gave it to his daughter Clea Newman Soderlund in 2008; the lot sold for USD 5,475,000. The engraving is the companion to the "DRIVE CAREFULLY ME" Woodward had put on his [[Reference:6239|6239]] fifteen years earlier.


'''Christie's Lesson One, Geneva, 10 November 2013.''' The first Paul Newman to breach seven figures at auction — an Oyster Sotto 6263 hammered at about USD 1.089M.
'''Christie’s Lesson One, Geneva, 10 November 2013.''' The sale included an Oyster Sotto 6263 that sold for about USD 1.089 million. The lot description and dial attribution should be read with the later research record.
 
== Related references ==
 
* [[Reference:daytona|Daytona family index]]
* [[Reference:6239|Daytona 6239]]: first Cosmograph
* [[Reference:6263|Daytona 6263]]: manual-wind Oyster
* [[Reference:16520|Daytona 16520]]: first automatic (Zenith)
* [[Reference:116500LN|Daytona 116500LN]]: the ceramic-bezel modern Daytona
 
== Sources ==
* [https://www.phillips.com/auctions/auction/CH080318 Daytona Ultimatum, Geneva, 12 May 2018] — Phillips in Association with Bacs & Russo, curated by Pucci Papaleo (auction catalogue)
* [https://www.phillips.com/detail/rolex/NY080117/8 Rolex Cosmograph Daytona Ref. 6239, Lot 8, Winning Icons] — Phillips, New York, 26 October 2017
* [https://www.phillips.com/detail/rolex/NY080120/38 Rolex Ref. 6263 Cosmograph Daytona "Big Red", Lot 38] — Phillips, New York, 12 December 2020 (case 6'392'137, sold USD 5,475,000)
* [https://watchesbysjx.com/2013/11/spectacular-results-at-christies-rolex-daytona-lesson-one-auction-in-geneva-including-a-million-dollar-paul-newman.html Spectacular Results at Christie's Rolex Daytona "Lesson One" Auction] — Richard Lee, SJX Watches (2013)
* [https://revolutionwatch.com/a-movement-in-history-the-zenith-driven-rolex-daytona/ A Movement in History: The Zenith-driven Rolex Daytona] — Ross Povey, Revolution (2018)
* [https://revolutionwatch.com/rolex-john-player-special-paul-newman-daytona-ref-6241/ The Rolex "John Player Special" Paul Newman Daytona Ref. 6241] — Bob Ridley, Revolution (2017)
* [https://www.sothebys.com/en/articles/the-rolex-daytona-zenith-a-sothebys-guide Rolex Daytona Zenith: The Essential Guide] — Karyn Orrico, Sotheby's (2025)
* [https://mazzariolstefanoblog.com/en/stefano-mazzariol-blog-en/studio-sul-rolex-daytona-ref-116520-la-storia-i-mark-e-levoluzione-blog/ Study on the Rolex Daytona Ref. 116520: The History, the Marks and the Evolution] — Stefano Mazzariol
* [https://www.hodinkee.com/articles/a-vintage-watch-nerds-critical-dissection-of-the-rolex-daytona-past-to-present-part-1-3 A Vintage Watch Nerd's Critical Dissection of the Rolex Daytona, Past to Present] — Paul Boutros, Hodinkee (2012–2013, three parts)
* [https://www.hodinkee.com/articles/the-first-rolex-daytona-by-benjamin-clymer The Very First Rolex Daytona, Explained] — Benjamin Clymer, Hodinkee (2013)
* [https://www.phillips.com/article/127946519/rolex-daytona-aph-dial-116520-error Accidents Happen: How a Kerning Mistake Created a More Desirable Daytona] — Logan Baker, Phillips
* [https://perezcope.com/2022/12/31/rolex-daytona-6265-the-unicorn-frankenstein-plot/ Rolex Daytona 6265 — The "Unicorn" Frankenstein Plot] — Jose Pereztroika, Perezcope (2022)
* [https://perezcope.com/2022/11/03/rolex-daytona-6240-paul-newman-neanderthal-a-myth-goes-extinct/ Rolex Daytona 6240 Paul Newman "Neanderthal" — A Myth Goes Extinct] — Jose Pereztroika, Perezcope (2022)
* [https://perezcope.com/2025/12/03/not-quite-whiter-than-white-the-reality-of-the-rare-rolex-albino-daytona-ref-6263/ Not Quite Whiter Than White: The Reality of the Rare Rolex 'Albino' Daytona Ref. 6263] — Jose Pereztroika, Perezcope (2025)
* [https://www.rolex.com/en-us/watches/cosmograph-daytona/beyond-the-racetrack Cosmograph Daytona history]; Rolex, screw-down pushers, caliber 4030, caliber 4130 and ceramic-bezel chronology


[[Category:Daytona]]
[[Category:Daytona]]
[[Category:Glossary]]
[[Category:Glossary]]
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