Audemars Piguet Royal Oak Selfwinding "50th Anniversary" Ref. 15551ST.ZZ.1356ST.03 The Audemars Piguet Royal Oak Selfwinding "50th Anniversary" ref. 15551ST.ZZ.1356ST.03 has a 37 mm stainless steel case and the self-winding Calibre 5900. - Self-winding Calibre 5900, 60 h power reserve - Functions: hours, minutes, centre seconds and date - Case: stainless steel case, bezel set with brilliant-cut diamonds, glareproofed sapphire crystal and caseback. Diameter 37 mm, thickness 9.1 mm, water resistant to 50 m - Dial: grey dial with “Grande Tapisserie” pattern, white gold applied hour-markers and Royal Oak hands with luminescent coating - 40 brilliant-cut diamonds; ~0.92 carat (bezel) - Stainless steel bracelet with AP folding clasp Full set. Maker: Audemars Piguet. Reference: 15551ST.ZZ.1356ST.03. Available through ELITA's private desk — verification review, discreet handling and storage. Price on request.