Audemars Piguet: An 18ct. gold perpetual calendar and moonphase automatic wristwatch in octagonal shaped case with stepped bezel, the gilt dial with raised baton numerals, subsidiary dials for day, date and month, sector for moon with lunar calendar, the snap-on back with makers mark No.C 1188 and further engraved Quantieme perpetuel automatique No.1578, the signed automatic movement with gold rim to the rotor, jewelled to the centre with thirty six jewels, adjusted to heat, cold, isochronism and to five positions No.273460, with integral flexible gold bracelet and clasp