Patek Philippe. A fine and rare 18K pink gold and diamond-set self-winding waterproof wristwatch

Patek Philippe. A fine and rare 18K pink gold and diamond-set self-winding waterproof wristwatch
Signed Patek Philippe, Genève, movement no. 766'197, case no. 2'605'404, ref. 2551, manufactured in 1958
Cal. 12'''600 nickel-finished lever movement stamped twice with the Geneva seal, 30 jewels, Gyromax balance, engine-turned 18K gold rotor, the gilt matt dial with applied diamond-set square and baton numerals, silvered dauphine hands, subsidiary seconds, in circular water-resistant-type case with stepped bezel, screw back, downturned fluted lugs, case, dial and movement signed
36 mm. diam.