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Reference:pre-daytona-chronographs: Difference between revisions

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|title=Rolex Pre-Daytona Chronographs — 1920s–1968 Guide | Rolexopedia
|title=Rolex Pre-Daytona Chronographs — 1920s–1968 Guide | Rolexopedia
|description=Rolex hand-wound chronographs from the early monopushers through the Antimagnetique and Oyster models to the 6238 and 6239.
|description=Rolex hand-wound chronographs from the early monopushers through the Antimagnetique and Oyster models to the 6238 and 6239.
|keywords=Rolex chronograph, Pre-Daytona, 2021, 2023, Antimagnetique, Monoblocco, Barilotto, 2508, 3525, 3668, 3833, 4099, 4500, 4537, 4767, 5034, 6034, 6234, 6238, Valjoux 23, Valjoux 72, vintage Rolex
|keywords=Rolex chronograph, Pre-Daytona, 2021, 2023, 3068, Antimagnetique, Monoblocco, Barilotto, 2508, 3525, 3668, 3833, 4099, 4500, 4537, 4767, 5034, 6034, 6234, 6238, Valjoux 23, Valjoux 72, vintage Rolex
|image=Pre-daytona chronographs vintage poster.webp
|image=Pre-daytona chronographs vintage poster.webp
|image_alt=Rolex pre-Daytona chronograph reference photograph
|image_alt=Rolex pre-Daytona chronograph reference photograph
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</div>
</div>


This guide follows Rolex hand-wound wrist chronographs from the early hinged-case 2021 monopusher, through the non-Oyster 2508 and Oyster 3525, to later tonneau and round Oyster models. The 6238 sits near the Cosmograph 6239 in case size, pump pushers, dial tachymeter and Valjoux 72 movement family. Collectors call it the Pre-Daytona; its production overlaps the 6239.
This guide follows Rolex hand-wound chronographs, from early pocket and wrist monopushers through non-Oyster and Oyster wrist models to the later tonneau and round Oyster chronographs. The 6238 sits near the Cosmograph 6239 in case size, pump pushers, dial tachymeter and Valjoux 72 movement family. Collectors call it the Pre-Daytona; its production overlaps the 6239.






== Early single-button chronographs (1920s–c.1940) ==
== Early single-button chronographs (catalogue dates c.1920–c.1950) ==


The 2021 is a large, hinged-case monopusher documented in gold and steel. Auction catalogues date individual examples from the 1920s into the 1930s, and disagree on movement size and the date of the same case. [[Reference:2021|See the reference file for the examples and source records.]]
The 2021 is a large, hinged-case monopusher documented in gold and steel. Auction catalogues date individual examples from the 1920s into the 1930s, and disagree on movement size and the date of the same case. [[Reference:2021|See the reference file for the examples and source records.]]
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|-
|-
| [[Reference:2303|2303]] || c.1926–c.1936 dated examples; endpoints unconfirmed || 26–30mm round or tonneau, snap-back; steel and gold || Manual lever, 17 jewels in cited examples; caliber not confirmed || Two registers; crown pusher on several examples, case-band pusher on one
| [[Reference:2303|2303]] || c.1926–c.1936 dated examples; endpoints unconfirmed || 26–30mm round or tonneau, snap-back; steel and gold || Manual lever, 17 jewels in cited examples; caliber not confirmed || Two registers; crown pusher on several examples, case-band pusher on one
| [[Reference:3068|3068]] || Individual catalogue dates c.1935–c.1950; production span unconfirmed || 48–49.5mm, open-face gold pocket-watch cases || Manual lever; 16.5 lignes and 17 jewels at Sotheby’s, 17 lignes at Antiquorum; caliber unidentified || Single crown-operated button; pale, black and two-tone rose-sector dials documented
|}
|}


== Antimagnetique era (mid-1930s to late 1940s) ==
== Antimagnetique era (mid-1930s to late 1940s) ==


The earliest references here are non-Oyster chronographs. The 2508 has two registers and two pushers; auction catalogues and specialist literature disagree on its movement and case details. Later references added screw-down Oyster cases and their own documented movement fitments. Rolex’s wartime correspondence and later auction records document sales of 3525 chronographs to Allied prisoners of war; that history belongs to the individual watch and surviving archive.
The early group includes both non-Oyster chronographs and Oyster monopushers. Ref. 2508 has two registers and two pushers; auction catalogues and specialist literature disagree on its movement and case details. Auction records describe ref. 3346 as an Oyster monopusher with a rotating bezel marked to 60, and date individual examples from circa 1937 to circa 1942. The 3525 belongs to the later two-pusher, two-register branch. Rolex’s wartime correspondence and later auction records document sales of 3525 chronographs to Allied prisoners of war; that history belongs to the individual watch and surviving archive.


{| class="wikitable" style="width:100%;"
{| class="wikitable" style="width:100%;"
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|-
|-
| [[Reference:2508|2508]] || c.1935–1947 dated examples; endpoints unconfirmed || 35–38mm round, snap-back, non-Oyster || Movement attribution disputed; see article || Two registers and two pushers; oval/olive and rectangular forms are documented; date and diameter overlap
| [[Reference:2508|2508]] || c.1935–1947 dated examples; endpoints unconfirmed || 35–38mm round, snap-back, non-Oyster || Movement attribution disputed; see article || Two registers and two pushers; oval/olive and rectangular forms are documented; date and diameter overlap
|-
| [[Reference:3346|3346]] || Auction estimates for examples range c.1937–1942; factory span unconfirmed || Steel Oyster case, 31–32mm in auction catalogues; rotating 60-unit bezel || Manual; 10 lignes in the Field Manual and 10½ in auction descriptions; no numbered caliber established || One pusher and central seconds; hold-to-zero action in Christie's and Sotheby's descriptions, with Phillips wording differing; Zerographe and Centregraph names both occur
|-
|-
| [[Reference:3525|3525]] || 1939–1945 || ~35mm Monoblocco Oyster, screw-down crown and back; pump pushers || Rolex Cal. 13 (Valjoux 23 VZ base) || One of Rolex’s earliest two-pusher Oyster chronographs; earlier Oyster monopushers existed; one-piece upper case (''Monoblocco'' / ''Barilotto''); the WWII POW reference; Corporal Clive James Nutting's Stalag Luft III watch (case 185,983) was documented as sold "gratis" to Nutting in 1943
| [[Reference:3525|3525]] || 1939–1945 || ~35mm Monoblocco Oyster, screw-down crown and back; pump pushers || Rolex Cal. 13 (Valjoux 23 VZ base) || One of Rolex’s earliest two-pusher Oyster chronographs; earlier Oyster monopushers existed; one-piece upper case (''Monoblocco'' / ''Barilotto''); the WWII POW reference; Corporal Clive James Nutting's Stalag Luft III watch (case 185,983) was documented as sold "gratis" to Nutting in 1943
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== Why the line matters ==
== Why the line matters ==


Earlier references established the Oyster case, two-register layout and Valjoux-derived chronograph architecture that appear again in the 6238 and 6239. The 6238 and 6239 overlap in published production dates, so “pre-Daytona” describes the 6238’s collector position rather than a clean factory succession. Auction records can document wartime provenance or a particular dial, but estimates and isolated results do not define the whole reference family.
The Oyster monopusher 3346 and two-pusher 3525 preceded later round Oyster chronographs. The cited records do not establish a direct mechanical lineage from the 3346 to the 6238 or 6239. The 6238 and 6239 overlap in published production dates, so “pre-Daytona” describes the 6238’s collector position rather than a clean factory succession. Auction records can document wartime provenance or a particular dial, but estimates and isolated results do not define the whole reference family.


[https://www.phillips.com/detail/rolex/CH080123/99 Phillips, ref. 6034, case 847'307] [https://www.christies.com/lot/rolex-a-fine-and-rare-stainless-steel-6200134/?intObjectID=6200134&lid=3 Christies, ref. 6034, case 907'744]
[https://www.phillips.com/detail/rolex/CH080123/99 Phillips, ref. 6034, case 847'307] [https://www.christies.com/lot/rolex-a-fine-and-rare-stainless-steel-6200134/?intObjectID=6200134&lid=3 Christies, ref. 6034, case 907'744]
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* [[Reference:2303|2303]] (early compact monopusher chronograph)
* [[Reference:2303|2303]] (early compact monopusher chronograph)
* Ref. 2023 (early monopusher; no reference article yet)
* Ref. 2023 (early monopusher; no reference article yet)
* [[Reference:3346|3346]] (Oyster monopusher)
* [[Reference:3525|3525]] (wartime Monoblocco chronograph)
* [[Reference:3525|3525]] (wartime Monoblocco chronograph)
* [[Reference:6234|6234]] (round Oyster chronograph)
* [[Reference:6234|6234]] (round Oyster chronograph)
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