Dial, case and movement signed, in very good conditionDIAM: 36 mm THICKNESS: 12 mmNOTE: Reference 6309 immediately followed in the footsteps of the reference 6202, the latter was introduced to the market in 1954 and had a revolving bezel with a triangle at the zero position. Only two years later, both references were followed by reference 6609, which was always adorned with the collectible Thunderbird bezel. This watch is kept in good condition and featuring many features sought after by collectors: the early RED DATEJUST on the dial, the early roulette dial.