AUDEMARS PIGUET. A VERY FINE AND RARE PLATINUM AND CERAMIC SEMI-SKELETONISED TOURBILLON CHRONOGRAPH WRISTWATCH SIGNED AUDEMARS PIGUET, ROYAL OAK OFFSHORE TOURBILLON CHRONOGRAPH MODEL, REF. 26388PO, MOVEMENT NO. 882'131, CASE NO. 51166-055, CIRCA 2016 Movement: Cal. 2933, manual, 30 jewels, signed Dial: Signed Case: Glazed displayed back secured by 8 screws, 44 mm. wide, signed With: Platinum Audemars Piguet deployant clasp, Warranty dated 28 April 2016, presentation box and outer packaging