Speedmaster, Reference 2998-3 | A stainless steel chronograph wristwatch with bracelet | Made in 1961 Dial: black Calibre: cal. 321 manual winding, 17 jewels Movement number: 17'764'017 Case: stainless steel, screw-down case back Closure: stainless steel Omega expandable bracelet and folding clasp Size: 40 mm diameter, bracelet circumference approximately 180 mm Signed: case, dial and movement Box: no Papers: no Accessories: Omega Extract from the Archives