Carrera Dato, Ref:2547 N, Circa 1970
17-jewel Valjoux Cal.723 manual wind movement, black dial with applied polished baton hour markers, black outer 1/5th second divisions with Arabic five second markers on polished ground, further outer blue calendar indications, polished pointed baton hands with luminous inserts and centre chronograph hand, red tipped calendar hand, engine turned silvered subsidiary dials at 3, 6 and 9 for constant seconds, 30 minute and 12 hour recording, day and month apertures at 12, brushed and polished round case with snap on back, crown flanked by twin pushers, quick set buttons set in band at 9 and 10, fitted Gay Freres smooth ribbed link bracelet with signed folding clasp date coded 1 70, case and movement signed Heuer Leonidas, dial signed
36mm.