Heuer Autavia Ref 7763 a stainless steel chronograph wrist watch circa 1968. Dial: black, silvered sub-registers. Calibre: cal. 7730 manual winding, 17 jewels. Case: polished round, snap on back, bi-directional calibrated bezel. Closure: Tag Heuer stainless steel link bracelet and folding clasp. Dimensions: 40 mm diameter, bracelet circumference approximately 164 mm. Signed: case, dial movement. Accessories: two additional links.