Reference:6238
Daytona → 6238
The 6238 is the chronograph Rolex sold immediately before the 6239 took the Cosmograph name in 1963. Same 36mm Oyster case, same Valjoux 72 base, same pump pushers — but a smooth bezel and the tachymetre still printed on the dial. Production ran from 1962, overlapped the 6239 for several years, and closed around 1968. Teddy Dewitte's figures, published in A Collected Man's 2020 Pre-Daytona essay by Russell Sheldrake, put the total near 3,965 examples across steel and a small gold subset. The "Pre-Daytona" tag is market shorthand the collector world settled on later. Aurel Bacs, interviewed in the same piece, argues the production overlap makes the 6238 more sibling than predecessor.
Core facts
| Field | Value |
|---|---|
| Reference | 6238 |
| Family | Daytona (Pre-Daytona / Pre-Cosmograph) |
| Production | 1962 to 1968 per Monochrome 2024; 1961 to 1967/68 per A Collected Man (Sheldrake 2020), with overlap into early 6239 production |
| Total production | ~3,965 (Dewitte, A Collected Man): ~3,590 in steel, ~225 in 14k yellow gold, ~150 in 18k yellow gold |
| Case | 36mm stainless steel; 14k or 18k yellow gold variants; pump (non-screw) pushers; no crown guards |
| Movement | cal 72B Valjoux carry-over from the 6234 on first-series production; cal 722 from the second-series redesign |
| Beat rate | 18,000 vph |
| Bezel | smooth polished steel (or gold to match the case); no graduations |
| Tachymetre | printed on the dial periphery, not on the bezel |
| Crown | 7mm Twinlock, signed Rolex coronet (no Oyster designation) |
| Crystal | acrylic, flat |
| Bracelet | 7205 rivet (period of original delivery); gold cases on matching gold bracelets |
| End link | 271 |
| Lume | tritium throughout |
| Dial variants | 14 distinct dial / case iterations cataloged by Edmond Saran (Le Monde Edmond 2016); silver more common, black harder to find, a rare grey on steel |
| Period retail | CHF 780 per a 6238 with original receipt published by A Collected Man |
Where it sits in the line
Three references frame the position. The 6234 (1955 to 1961) is the predecessor: a steel chronograph, also Valjoux 72, also smooth bezel, also tachymetre on the dial, but with a different case profile and bare-ebauche movement before Rolex started stamping its own caliber numbers. The 6238 inherits the chronograph identity from the 6234, ports it onto the more familiar 36mm Oyster case shared with the 6239, and gets stamped as cal 72B then cal 722 across its run. The 6239 (1963 to 1969) is the successor and the watch that takes the Cosmograph name. Only two parts changed at the cutover, per the Dewitte interview: the smooth bezel was replaced with the engraved steel tachymetre, and the sub-dials adopted contrasting colour against the dial.
Bacs's framing in the same piece is worth quoting. The 6238 "is almost a sibling of the Daytona, not a Pre-Daytona," because production windows overlap by roughly four years and only those two visible parts separate the two references. The "Pre-Daytona" name is a market convention, not a Rolex distinction.
Production outline
The dates are slightly contested in the headline sources, by a year at each end. Monochrome's Daytona history sets the 6238 from 1962 to 1968. A Collected Man, working from Saran and Dewitte, brackets the run as 1961 to 1967/68 with several years of overlap into early 6239 production. Both agree on the parallel-production fact, which is the load-bearing part of the timeline: the 6238 did not stop when the 6239 launched.
Total production per Dewitte breaks down as roughly 3,590 in steel, 225 in 14k yellow gold, and 150 in 18k yellow gold, about 3,965 watches across the run. The two karat weights of gold are explained by the same US import-tax mechanism that drove the 6234's split: 14k carried a lower import duty into the United States and was typically destined for that market, while 18k went elsewhere. The Vintage Rolex Field Manual does not break the figure out separately; Dewitte's numbers are the working market reference.
The serial bands track the run cleanly. First-year production sits in the 840,000 to 919,000 band, roughly 1962. The 950,000 to 997,000 band falls in 1963, the period when the 6239 arrives alongside. The 1.0M to 1.5M serials cover 1964 to 1966, the bulk of the production. Late examples in the 1.5M to 1.9M band carry into 1967 and 1968. Carlo Pergola's Rolex Daytona: A Legend Is Born serial-year chart anchors the matching, and per-year volumes are not finer-grained than that in the published literature.
Movement notes
Inside is the Valjoux 72, the column-wheel, lateral-clutch, tri-compax chronograph base that goes on to power the entire manual-wind Daytona line through to the 6263 / 6265. The 6238 ran two Rolex variants. First-series production carried cal 72B, the bare Valjoux 72 derivative held over from the late 6234 with Rolex finishing but no Rolex caliber stamp. The second-series redesign brought cal 722, the first Valjoux 72 to carry a Rolex caliber number, and that movement carried directly into the 6239 and 6241. The transition is documented in Sheldrake's A Collected Man piece.
Both calibers run at 18,000 vph (2.5 Hz), 17 jewels, no hack, no quickset. The frequency increase to 21,600 vph waited for cal 727 in 1970, two references downstream.
Dial map
Edmond Saran cataloged 14 distinct dial / case iterations across the 6238 run for Le Monde Edmond's 2016 in-depth review. That taxonomy is the definitive working reference, and the per-mark photographic capture is in the French-language piece rather than in the English-language survey work. Four variants carry confidently across the English literature.
The standard silver dial is the most common configuration across the run: silver-toned with applied steel batons, tachymetre printed in black around the periphery (units per hour, scaled to the chronograph seconds hand), three black-printed sub-dials in contrasting layout. The standard black dial is the more sought-after of the two main configurations and harder to find in clean condition; the printing layout and sub-dial geometry match the silver, but the contrast inverts. A rare grey dial appears only in steel cases, a couple of shades darker than the silver, called out by Dewitte as a known but uncommon variant.
The Japanese-market 6234 with "T SWISS T" and no lume on dial or hands is sometimes folded into Pre-Daytona discussion alongside the 6238. The dial retains the standard tritium designation but the lume itself was never applied, and the hands are special items with no lume channels fitted at the Rolex workshop. Dewitte attributes this to Japanese aversion to radioactive materials in the post-war period. The variant is documented on the 6234 specifically rather than on the 6238, but sits in the same lineage discussion in the A Collected Man piece.
Retailer-signed examples surface across the run in small numbers. Tiffany & Co. and Serpico y Laino signatures have been recorded on 6238 dials at auction; one or two per dial generation is the working census. As with the 6239 retailer dials, none are common, and the signature is added under the Rolex coronet without disturbing the standard dial layout.
A specific hand-length point shows up at authentication. The short minute hand is widely accepted as original 6238 fitment. A longer minute hand resembling the 6239's appears mainly on later examples in the parallel-production overlap period. Dewitte notes both sets are correct Rolex hands; the longer set could be cross-fitted from the 6239 line during the overlap or could be service replacement, and the A Collected Man piece takes no firm position on which.
Case, bezel, crystal, and crown
The 6238 case is the same 36mm Oyster shape that runs through the entire manual-wind Daytona generation. Stainless steel for the bulk of production, with 14k and 18k yellow gold variants in small numbers. Lugs are 19mm, no crown guards, polished bezel-side surfaces and brushed top: the chronograph case profile that becomes the foundation for the 6239 and 6240 to come. The pushers are pump-style. Screw-down pushers do not arrive on the line until the 6240 in 1965.
The bezel is the defining 6238 feature. Smooth polished steel (or matching gold), no engraved tachymetre, no graduations of any kind. Dewitte calls the look "similar to an Explorer" in the A Collected Man interview, and the comparison reads cleanly: the smooth bezel pairs with the printed-on-dial tachymetre to push the 6238 visually closer to a time-only Oyster than to anything that came after. When the 6239 drops the smooth bezel for the engraved tachymetre and moves the unit-per-hour scale off the dial, the entire visual identity of the chronograph line shifts in one cutover.
The crown is a 7mm Twinlock, signed with the Rolex coronet, no "Oyster" designation. Same crown the 6239 uses. The crystal is flat acrylic. Crown, crystal, and case fitments are interchangeable across the manual-wind chronograph generation up to the 6240 cutover, which is why Pre-Daytona service work tends to leave fewer originality questions than the screw-pusher generation.
Bracelets, end links, and clasps
The 7205 rivet bracelet is the period-correct fitment for steel 6238s through the production run, riding on 271 end links. The 7205 is the 19mm-lug Oyster rivet bracelet shared with the 6239 and the time-only Air-King and Precision references of the same era; the 6234 used the earlier 6635 rivet bracelet on the same end link family. Gold-case 6238s left the retailer on matching gold bracelets, typically a 7205-equivalent in 14k or 18k to match the case karat. The 6635 turns up on early 6238s during the brief 1962 overlap with the end of 6234 production, then drops out.
The Big Logo Gay Frères-stamped clasp is the period-correct fit on early 6238 production; the Small Logo Rolex-coronet clasp succeeds it from 1958 forward and is the more commonly seen clasp on a 6238 surviving today. Neither carries a date code in the modern sense. The inside-clasp quarterly stamp on Gay Frères clasps from the late 1950s through 1975 reads as <Roman quarter>.<two-digit year> (for example "III.62" for third quarter 1962). The single-letter year code system does not start until 1976. The clasp dates the bracelet, not the watch head; see Reference:Bracelets for the full date-code key.
A "771" reading appears in some aggregator end-link tables, but every period photograph of a 6238 bracelet stamps 271. The right number is 271.
Special branches
A handful of 6238 branches earn their own line in the literature.
The most-cited cinematic appearance is George Lazenby's 6238 in On Her Majesty's Secret Service (1969). The watch is a steel 6238 worn on screen by Lazenby's Bond, with a still reproduced in the A Collected Man piece. The on-screen watch is identifiably modified for the role, though the modification details are not enumerated in the source literature, and the literature treats the OHMSS appearance as a documented cinematic record rather than a separate variant.
Yellow gold 6238s exist in two karat weights. The 18k gold examples (~150 produced) and the 14k gold examples (~225 produced) carry matching gold bracelets, gold pushers, gold crown, and gold bezel. The gold 6238 trades in a different market from the steel reference and is the cleanest path to a gold-Pre-Daytona acquisition; the 6234 in 14k turns up more often at auction than the 18k version because of the US import-tax distribution pattern.
The CHF 780 receipt example is a documented period-pricing artifact. A 6238 surfaced through A Collected Man with its original retailer receipt showing the Swiss-franc retail price. CHF 780 in mid-1960s currency anchors the period market position of the reference and the relative entry-level pricing of a Rolex chronograph against the smaller-volume gold Pateks and Vacherons of the same era.
The 6234-to-6238 handoff is the other branch worth recording. The 6234 was the chronograph predecessor with the bare Valjoux 72 movement and a smaller Oyster case; the 6238 carries the chronograph identity forward onto the 36mm 6239-shared case and brings the cal 72B / cal 722 stamp progression. At no point in this sequence is the watch called a Daytona. Rolex applied the Cosmograph name only to the 6239 in 1963 and added the Daytona signature to the dial in 1964. The 6238 sat one cutover and one dial revision short of the name.
Historical market and auction record
The 6238's market sits below the headline Paul Newman 6239 numbers and well below the Newman-owned PN 6263 prices, but the published market is mature and prices have tracked upward steadily through the 2010s and 2020s. Bacs is on record in A Collected Man asserting that "in every category of the 6238, Phillips holds the world record for price achieved at auction"; Phillips's lot-by-lot results are the working ceiling for each variant.
Standard steel 6238s with clean dials trade in the upper five figures and into the low six figures depending on dial colour, condition, and originality. Black-dial examples carry a premium over silver; grey-dial examples sit above black. Gold 6238s in both karat weights trade meaningfully above any steel example, with the 18k market deeper than the 14k by a small but consistent margin in published results. The OHMSS-era cinematic record does not appear to translate into a documented price branch the same way the Newman provenance does for the 6239. The Lazenby still anchors the reference culturally, but no specific Lazenby-screen-worn 6238 has surfaced at auction with verified provenance.
The 6238 has its own quiet market and its own collector base. The Patek-leaning collector segment Bacs identifies in the same A Collected Man interview ("these are probably the most Patek-looking of all Rolex's chronographs") is the steadier driver of 6238 prices than any motorsport-provenance lift the Made For Racing essay attaches to the 6239 and 6263 lines.