AUDEMARS PIGUET IN ORO REF. 25657 CALENDARIO PERPETUO E FASI LUNARI, N. 1643, ANNI ‘70

GOLD AUDEMARS PIGUET REF. 25657 PERPETUAL CALENDAR WITH MOON PHASES, N. 1643, 70S
Three-body circular 18K gold case, signed, n. C1123, moulded bezel, concave lugs, snap on caseback, correctors on the sides. Not original strap and 18K gold déployante clasp.
White dial, signed, applied bâton indexes, minute divisions, indications of day, date and month, phases and ages of the moon. Bâton hands.
Self-winding movement, rhodium-plated caliber 2120/2, signed, n. 273575, 36 jewels, côtes de Genève, peripheral rail rotor with 21K gold rim, lever escapement, monometallic balance adjusted for hot and cold, isochronism and five positions, flat hairspring, KIF shock-absorber.
Diameter Ø: 36 mm
Note: working.