Audemars Piguet Royal Oak Perpetual Calendar in 18k, 33mm case size. Auto movement under sapphire exposition glass, w/ date, day, month, moonphase and perpetual calendar. Ref D-59743. Complete with original bill of sale from U.S. authorized A.P. dealer. Est. Retail: $55,000; Manufacturer: Audemars Piguet; Model: Perpetual Calendar; Model #: D-59743; Materials: 18k; Case size: 33 mm; Gender: Male; Dial: Black Perpetual Calendar dial; Movement: Automatic; Functions: Date, Day, Month, Moonphase and Perpetual Calendar; Box: Gray & Sons Mahogany Presentation Box; Warranty: 12 months; Condition: Certified pre-owned;.