AUDEMARS PIGUET. A RARE STAINLESS STEEL AUTOMATIC ANNUAL CALENDAR WRISTWATCH WITH MOON PHASES AND BRACELET SIGNED AUDEMARS PIGUET, ROYAL OAK, QUANTIEME PERPETUEL AUTOMATIQUE, NO. 156, REF. 25654ST, MOVEMENT NO. 286’158, CASE NO. C 19649, CIRCA 1987 Movement: cal. 2120, automatic, 38 jewels, signed Dial: signed Case: back secured by eight screws, 39 mm wide. signed With: stainless steel Audemars Piguet integral bracelet with deployant clasp stamped J12, overall length of approx. 180 mm. and service box.