OMEGA rare 18k pink gold gents wristwatch Constellation chronometer, self winding, Switzerland around 1968, reference 168.010/11, screwed down case back with representation observatory, Pie-Pan dial with raised hour signs, movement copper coloured, calibre 564, flat rim balance, flat hairspring, incablock shock-absorber, swan′s neck regulateur, diameter approx. 35 mm, condition 2, property of a collector