Model: CarreraReference: 2447NDate: Circa 1968Movement: 17-jewel Valjoux Cal.72 manual wind Dial: First execution black with silvered printing, applied baton hour markers with luminous tips, black outer 1/5th second divisions to silvered surround, subsidiary dials at 3, 6 and 9 for constant seconds, 30 minute and 12 hour recording, second execution polished pointed baton hands with black accents and luminous inserts, white centre chronograph handCase: Polished round, screw down back, crown flanked by twin chronograph pushers, No.102713Strap/Bracelet: Black Heuer racing leatherBuckle/Clasp: Signed stainless steel buckleSigned: Case, dial & movementSize: 36mm