A silver open faced keyless lever pocket watch, Patek Philippe, No.164709, circa 1910, white enamel dial signed Patek Philippe & Cie, Geneve, Arabic numerals, subsidiary seconds, Louis hands, signed and numbered frosted gilt movement jewelled to the third and with wolf's tooth winding, bi-metallic compensation balance, signed and numbered silver cuvette, case with gilt highlights, engraved monogram and stamped PP.Co, diameter 50mm.