Royal Oak Perpetual Calendar, Ref. 25636BA | A yellow gold skeletonised perpetual calendar wristwatch with moon phases and bracelet | Circa 1990 Audemars Piguet Royal Oak Perpetual Calendar, Ref. 25636BA A yellow gold skeletonised perpetual calendar wristwatch with moon phases and bracelet Circa 1990 Dial: skeletonized Calibre: cal. 2120/2 automatic winding, 36 jewels Movement number: 324'248 Case: 18k yellow gold, back secured by 8 screws Case number: 7'765 Closure: 18k yellow gold Audemars Piguet bracelet and 18k white gold folding clasp Dimensions: 39 mm, bracelet circumference approx. 185 mm Signed: case, dial and movement Box: no Papers: no Accessories: none
