Patek Philippe, an 18ct. gold open faced keyless lever pocket watch, No.92504, circa 1900, white enamel dial signed Patek Philippe & Co. Geneve, Roman numerals, outer arabic five minutes, subsidiary seconds, signed and numbered matt gilt movement with wolf's tooth winding, snail adjustment to the regulator, signed and numbered gold cuvette, case stamped PP.Co, diameter 45mm.