13. 13Y Vacheron & Constantin. A fine 18K gold manual wind chronograph wristwatch Vacheron & Constantin. Fine 18K (750) yellow gold wrist chronograph mechanical movement Date: Circa 1945 Movement: 17-jewel Cal.434 manual wind, column wheel chronograph, No.431410 Dial: Silvered, applied gilt baton hour markers with Roman numeral 12 and 6 hour markers, black outer 1/5th second divisions with Arabic five minute markers, black outer tachymetre scale, subsidiary dials at 3 and 9 for seconds and 30 minute recording, gilt pointed baton hands, blued steel centre chronograph hand Case: Polished round, snap on back, teardrop lugs, crown flanked by twin pushers, No.278171 Strap/Bracelet: Black crocodile leather Buckle/Clasp: Gold plated buckle Signed: Case, dial & movement Size: 36mm Weight: 46,14g