OMEGA Seamaster gents wristwatch, Switzerland around 1973, self winding, reference 1660138, stainless steel case with 4-times screwed down case back, neutral leather strap with original buckle, blue dial with raised hour- indexes, date at 3, white hands, copper coloured movement calibre 1012, precision adjustment, measures approx. 37 mm x 37 mm, seal has to be replaced, condition 2