In 1963, production of the COSMOGRAPH began with the reference 6239, initially with a VALJOUX 72B movement, and identical to that of the 6238 models. In 1965, the first model with screw-in buttons was produced. TheDAYTONAboom started in Italy in 1985, when a magazine published on its cover the photo of G. Agnelli, arm resting on the mast of a boat, wearing a classic 6263 with light-coloured dial. A simple photo that would breath new life into a model that for 22 years had never really found its public.
- Movement: Valjoux 7750b1 Automatic, mechanical, self-winding.
- 25 Jewels
- Functions: hours, minutes, seconds, working chronograph
- Size: diameter 40 mm, height 12.5 mm
- Case: Solid Stainless Steel 316L
- Dial: white, zircon stones as hour markers, three subdials
- Bezel: Full Diamond Bezel (with Diamond Lugs
- Genuine scratch-resistant, pressure-proof sapphire crystal glass.
- Strap / Bracelet: Genuine Leather with Deployant Buckle
- Smooth sweeping second hand,exactly like the real Rolex
- Double locking security clasp
- Screws in the links not pins
- Serial/band number on last link/lugs
- Serial number between the lugs
- Serial number on clasp
- Power reserve approx. 42 hours.
- Weigh the same as authentic
- Replicated to the smallest detail.
- No docs and box.