HEUER AUTAVIA. REF. 3646. CIRCA 1965 Steel pilot's wristwatch with chronograph for the French market. Case: tonneau, screw-down case back, pump push-buttons, graduated black aluminium bezel, inside of case back signed Heuer Leonidas. Dial: black, two white counters, "Fab. Suisse" and "T Swiss" at 6 o'clock, applied hour-markers and tritium dots. Movement: mechanical with column wheel, Cal. Valjoux 92, stamped M.N., signed Heuer Leonidas. Strap: rigid perforated steel bracelet with single buckle. Dial, case and movement signed. Numbered 96228. Diameter: 39 mm. Condition report on request Condition report on request