KEYSTONE gents wristwatch with calibre Felsa 690 in stainless steel, Switzerland around 1955, self winding, reference 302, large case with screwed-down case back, silvered duotone-dial with raised silvered indices & numerals, silvered dauphine hands, sweep seconds, rhodium plated movement calibre Felsa 690 (Bidynator) with fausses cotes decoration, 25 jewels, glucydur-screw balance, diameter approx. 36,5 mm, overhaul recommended at buyer's expense, condition 2, property of a collector