Cosmograph Signature
Cosmograph Daytona 6239 — Cosmograph Signature
1963–?
Early dials signed only “Cosmograph”, before “Daytona” was added. A c. 1964 example keeps its original 300-unit bezel.
About 14,000 made, a few hundred of them in gold, per auction and collector estimates.
No verified image of this watch yet
Identifying details
- Pump pushers
Plain push-piece chronograph pushers, not screwed down.
- Tachymeter bezel
Tachymeter scale engraved on the rather than the dial.
Variants of 6239
Reference overview →| Variant | Production |
|---|---|
| First Series, Double Swiss | 1963–c. 1964 |
| First Series, Double Swiss · Underline Double Swiss | 1963 |
| First Series, Double Swiss · Double Swiss, No Underline | 1963 |
| First Series, Double Swiss · Double T Swiss T | 1963–1964 |
Case & movement
- Reference
- 6239
- Production
- 1963–?
- Case material
- Stainless steel
- Case diameter
- 36.5 mm
- Water resistance
- 50 m
- Crystal
- Acrylic
- Movement
- Manual winding
- Date
- No
More specifications (1)
Movement
Valjoux 72
13-ligne hand-wound chronograph with column wheel and horizontal clutch, descended from the 14-ligne Valjoux 22/23. Its 12-hour counter at six set the classic three-register layout. Made 1938–1974 and used by Rolex, Heuer and many others; Rolex fitted it to the pre-Daytona ref. 6234.