Audemars Piguet Royal Oak Perpetual Calendar Ref. 26598BC.ZZ.1220BC.01 The Audemars Piguet Royal Oak Perpetual Calendar ref. 26598BC.ZZ.1220BC.01 has a 41 mm 18-carat white gold case and the self-winding Calibre 5134. - Self-winding Calibre 5134, 40 h power reserve - Functions: perpetual calendar with week indication, day, date, astronomical moon, month, leap year, hours and minutes - Case: 18-carat white gold case, 18-carat white gold bezel set with baguette-cut diamonds, glareproofed sapphire crystal and caseback, screw-locked crown. Diameter 41 mm, thickness 9.5 mm, water resistant to 20 m - Dial: purple dial with “Grande Tapisserie” pattern, purple counters with white external zone, white gold applied hour-markers and Royal Oak hands with luminescent coating, purple inner bezel - 18-carat white gold bracelet with AP folding clasp. Two additional rubber straps in black and purple Full set. Maker: Audemars Piguet. Reference: 26598BC.ZZ.1220BC.01. Available through ELITA's private desk — verification review, discreet handling and storage. Price on request.