Audemars Piguet. A fine and rare 18K gold full calendar square-shaped wristwatch with phases of the moon and teardrop lugs

Audemars Piguet. A fine and rare 18K gold full calendar square-shaped wristwatch with phases of the moon and teardrop lugs
Signed Audemars Piguet, Geneve, No. 56657, circa 1949
RSQ, with nickel-finished lever movement, 18 jewels, the silvered matte dial with applied gold baton indexes, four subsidiary dials indicating date, day, month and phases of the moon combined with lunar calendar and constant seconds, the square-shaped case with downturned teardrop lugs, snap on back, case, dial and movement signed
25 mm. wide