Audemars Piguet Royal Oak Selfwinding Flying Tourbillon Openworked "50th Anniversary" Ref. 26735ST.OO.1320ST.01 The Audemars Piguet Royal Oak Selfwinding Flying Tourbillon Openworked "50th Anniversary" ref. 26735ST.OO.1320ST.01 has a 41 mm stainless steel case and the self-winding Calibre 2972. - Self-winding Calibre 2972, 65 h power reserve - Functions: flying tourbillon, hours and minutes - Case: stainless steel case, glareproofed sapphire crystal and caseback, screw-locked crown. Diameter 41 mm, thickness 10.6 mm, water resistant to 50 m - Dial: rhodium-toned openworked dial, white gold applied hour-markers and Royal Oak hands with luminescent coating, slate grey inner bezel - Stainless steel bracelet with AP folding clasp Full set. Maker: Audemars Piguet. Reference: 26735ST.OO.1320ST.01. Available through ELITA's private desk — verification review, discreet handling and storage. Price on request.