BUTEX / BWC divers wristwatch in steel reference 713008, Switzerland around 1965, self winding, screwed-down case back & winding crown, bidirectional revolving bezel with 60-minutes graduation, gray dial with tritium-indices & hands, luminous material partial missing, calibre ETA 2452, 25 jewels, diameter approx. 36 mm, later box in shape of a pressure bottle enclosed, winding & hand-setting has to be adjust, needs to be overhauled, condition 3