Vacheron Constantin: An 18ct. gold perpetual calendar and moonphase automatic wristwatch, the white dial with raised baton numerals, subsidiary dials for the day, date and month combined with leap year indicator, a sector at six for the moon with lunar calendar, the case with snap on back with makers mark numbered 582758 43031/1, the signed movement with gold rim to the rotor, jewelled to the centre with thirty six jewels, adjusted to heat, cold, isochronism and to five positions, numbered 733070, with original brown leather strap and 18ct. gold buckle