OMEGA gents wristwatch model Constellation, Switzerland around 1973, reference 168.0055, chronometer in stainless steel/14k yellow gold combined including bracelet, case back with representation observatory screwed-down, movement gold-plated, calibre 1011, 23 jewels, adjusted in 5 positions, diameter approx. 35 mm, length approx. 20,5 cm, seal has to be replaced, condition 2-3