Patek Philippe & Cie, Genève, No. 1155016, case No. 2689786, Ref. 3519. Produced in the late 1960's.Very fine, rectangular, 18K yellow gold gentleman's wristwatch. two-body, solid, polished and brushed, stepped bezel and lugs. champagne with applied yellow gold bâton indexes. "Bâton" yellow gold hands. Cal. 23-300PM stamped with the Geneva Quality Hallmark, rhodium-plated, "fausses-côtes" decoration, 18 jewels, Gyromax balance adjusted for heat, cold, isochronism and 5 positions, shock-absorber, self-compensating freesprung balance-spring.Dial, case and movement signed.Dim. 25 x 33 mm.