Patek Philippe & Cie, Genève, No. 1444055, case No. 2886837, Ref. 3998. Produced in 1990, sold on December 11, 1991.Very fine, center-seconds, self-winding, water-resistant, platinum and diamond gentleman’s wristwatch with date, 50-hour autonomy and a platinum Patek Philippe buckle. Accompanied by a fitted boxand certificate. three-body, solid, polished and brushed, screwed-down case back, concave lugs. satiné silver set with 11 round diamond indexes, aperture for the date. White gold "dauphine" hands. 310 SC, rhodium-plated, "fausses côtes" decoration, 29 jewels, straight line lever escapement, monometallic balance adjusted to heat, cold, isochronism and 5 positions, shock-absorber, self-compensating flat balance-spring, micrometer regulator, 21K gold rotor.Dial, case and movement signed.Diam. 33 mm.