50. 50Y Patek Philippe. An 18K gold automatic calendar wristwatch Patek Philippe. Montre bracelet en or jaune 18K (750) avec date mouvement automatique Reference: 3802/200 Date: Circa 1990 Movement: 29-jewel Cal.310SC, adjusted to heat, cold, isochronism and 5 positions, No.1442229 Dial: White, black Roman numeral hour markers, black outer minute divisions, date aperture at 3, black steel baton hour markers, centre seconds Case: Brushed and polished round, textured bezel, snap on back, No.2866015 Strap/Bracelet: Black crocodile leather Buckle/Clasp: Signed 18K gold buckle Signed: Case, dial & movement Size: 33mm Weight: 44,27g Accompaniments: Patek Philippe box