Audemars Piguet Royal Oak Selfwinding Blue Sapphire "50th Anniversary" Ref. 15514BC.SS.1284BC.01 The Audemars Piguet Royal Oak Selfwinding Blue Sapphire "50th Anniversary" ref. 15514BC.SS.1284BC.01 has a 41 mm 18-carat white gold case set with baguette-cut blue sapphires and the self-winding Calibre 4309. - Self-winding Calibre 4309, 70 h power reserve - Functions: hours, minutes and centre seconds - Case: 18-carat white gold case set with baguette-cut blue sapphires, glareproofed sapphire crystal and caseback. Diameter 41 mm, thickness 11.6 mm, water resistant to 20 m - Dial: 18-carat white gold dial set with baguette-cut blue sapphires, white gold Royal Oak hands with luminescent coating - 861 baguette-cut blue sapphires; ~41.4 carats on whole watch - 18-carat white gold bracelet set with baguette-cut blue sapphires, AP folding clasp Full set. Maker: Audemars Piguet. Reference: 15514BC.SS.1284BC.01. Available through ELITA's private desk — verification review, discreet handling and storage. Price on request.