VACHERON CONSTANTIN, WHITE GOLD 'CHRONOMETRE ROYAL', REF. 6694

The Chronomètre Royal Ref. 6694 debuted in 1962, showcasing Vacheron Constantin's first automatic caliber with chronometer certification, caliber 1072. This caliber boasted a chronometric balance and a rotor placed on ruby ball bearings. Reference 6694, nicknamed "the Batman" by collectors, is distinguished by its distinctive wide, wing-shaped lugs, making it easily identifiable.