CERTINA DS-2 Chronolympic gents wristwatch with chronograph, Switzerland around 1970, manual winding, stainless steel case, case back with DS-symbolism screwed-down, multicolored dial with raised hour-indexes, red stop-second-hands, date, rhodium plated movement calibre 29-631 (Valjoux 234), 17 jewels, diameter approx. 43 mm, signs of use partial revised, condition 2-3