3093. (60131993/1) Heuer. A stainless steel automatic calendar chronograph bracelet watch Heuer. Chronographe bracelet en acier avec date mouvement automatique Model: Autavia Reference: 1163 Date: Purchased in December 1971 Movement: 17-jewel Cal.15 automatic with micro-rotor Dial: Black, signed Case: Brushed and polished tonneau form, screw down back, crown at 9, No.243513 Strap/Bracelet: Fitted stainless steel link Buckle/Clasp: Signed folding clasp Signed: Case, dial & movement Size: 41mm Accompaniments: Original guarantee dated December 1971, instructions manual