OMEGA rare 18k yellow gold gents wristwatch Constellation chronometer, self winding, Switzerland around 1969, reference 168009, original bracelet with deployant clasp, screwed down case back with representation observatory, gray dial with raised hour-signs due to age slightly spotty, display of hours,minutes, sweep seconds & date, movement copper coloured, 24 jewels, calibre 561, central rotor, flat rim balance, flat hairspring, incablock shock-absorber, swan´s neck regulateur, original glass, winding crown neutral replaced, diameter approx. 35 mm, length approx. 19,5 cm, condition 2-3, total weight approx. 131g