12. 12Y Vacheron & Constantin. An 18K gold automatic wristwatch Vacheron & Constantin. Montre bracelet en or jaune 18K (750) mouvement automatique Reference: 63780 Date: Circa 1965 Movement: 29-jewel Cal.K1071 automatic, adjusted to heat, cold, isochronism and 5 positions, 18K gold rotor, Seal of Geneva, No.576148 Dial: Sunburst silvered, applied gilt faceted dart hour markers, gilt faceted lance hands, centre seconds Case: Brushed and polished tonneau form, screw down back, No.409604 Strap/Bracelet: Brown crocodile leather strap Buckle/Clasp: Gold plated buckle Signed: Case, dial & movement Size: 34mm Weight: 50,00g