Circa 1960s Omega Constellation, 36 M.M. 18K Yellow Gold 3 piece Water Proof Case. Caliber 551 26 Jewel Automatic self winding movement. Gold Pie Pan dial with raised Gold markers, sweep seconds hand and a Calendar window at the 3 position. New Black padded Crocodile strap. Watch length 9 inches. Excellent, seldom worn condition, recently serviced and comes with a one year warranty.