Ca. 32 grams of 18K gold. brand: Omega model: Constellation reference: 168.019 case diameter: 35 mm case height lug to lug: 40 mm lug width: 18 mm size: gents movement: automatic caliber: 751 - 24 jewels - 19800 A/h case material: 18K yellow gold bracelet material: leather buckle width: 16 mm clasp: gold steel glass: plexiglass, original Omega dial: champagne linen dial bezel: 18K yellow gold serial number: 276XXXXX year: ca. 1968 box: generic black box papers: no general condition: good specified condition: visible signs of normal use overall mechanical condition: running and winding smoothly, in good working order, for daily use we recommend a service amplitude (timegrapher): ca. 230 degrees