Patek Philippe. A fine 18K gold open face dress watch
Ref:715, Case No.428478, Movement No.892718, circa 1955
18-jewel Cal. 17'" 140 nickel finished lever movement adjusted to temperature, position and isochronism, monometallic balance with flat spring and index regulator, Seal of Geneva, silvered dial with applied gold faceted baton numerals, tapered gold hands, subsidiary seconds, within a polished gold case with hoop bow and monogrammed back, case, dial and movement signed. 47mm.