OMEGA 18k yellow gold Constellation Calendar chronometer gents wristwatch with gold bracelet, Switzerland around 1960, self winding, reference 2943/2954 SC, solid case, snap on case back with observatory-symbol, original 18k yellow gold milanese-bracelet with deployant clasp, gold-dial with raised hour-indices, Dauphine-hands, date, copper coloured movement calibre 504, 24 jewel, 5 adjustments, screw-balance, swan´s neck regulateur, diameter approx. 35 mm, length approx. 20 cm, condition 2