Ca. 33 grams of 18K gold. brand: Omega model: Constellation reference: 168009/168017 case diameter: 35 mm case height lug to lug: 40 mm lug width: 18 mm size: gents movement: automatic caliber: 561 - 24 jewels - 19800 A/h case material: 18K yellow gold bracelet material: suede leather buckle width: 16 mm clasp: gold steel glass: plexiglass, original Omega dial: champagne dial bezel: 18K yellow gold serial number: 244XXXXX year: ca. 1966 box: generic black box papers: no general condition: fair specified condition: visible signs of use overall; caseback doesn't open smoothly mechanical condition: running and winding smoothly, in good working order, for daily use we recommend a service amplitude (timegrapher): ca. 230 degrees