Audemars Piguet Royal Oak 26331ST.OO.1220ST.03. Automatic chronograph caliber AP 2385 movement. Steel 41mm case which is water resistant to 50 meters. Silver dial decorated with Tapisserie pattern, black sub-dials, date display between 4 and 5 o’clock position. Steel brushed and polished bezel with eight hexagonal recessed nuts, fastening the eight screws through the case back. Steel bracelet with folding clasp. Box and papers.