Audemars Piguet. A fine, rare and large stainless steel limited edition self-winding water-resistant skeletonized perpetual calendar wristwatch with phases of the moon and bracelet

Audemars Piguet. A fine, rare and large stainless steel limited edition self-winding water-resistant skeletonized perpetual calendar wristwatch with phases of the moon and bracelet
Signed Audemars Piguet, Automatic, Quantieme Perpetuel Automatique, Royal Oak, ref. 28636ST, No. 15/25, case no. D-42028, movement no. 391'055, manufactured in 1995
Cal. 2120 finely pierced and engraved gilt-finished lever movement, 36 jewels, the pierced and engraved rotor depicting the letters AP and with 21K gold rim, the skeletonized dial with five minute divisions on outer white chapter ring, four subsidiary dials indicating month, day, date and phases of the moon combined with lunar calendar, the water-resistant-type case with octagonal bezel secured by eight white gold screws, screw down crown, the glazed display back secured by eight screws, stainless steel Audemars Piguet link bracelet and deployant clasp, case, dial and movement signed
39 mm. wide