HEUER REF. 1163 AUTAVIA CHRONOGRAPH AUTOMATIC STEEL Heuer "Autavia" Automatic Chronograph, Ref. 1163. Made circa 1969. Fine, tonneau-shaped, self-winding, water-resistant, stainless steel wristwatch with round button chronograph, registers, tachometer, date and a stainless steel Heuer buckle. Two-body, polished and brushed, screwed-down case back, black bezel with tachometer graduation to 400 UPH, winding crown at 9. Bicolor black and white with applied luminous steel baton indexes and red markers, outer 1/5th seconds track, subsidiary dials for the 30-minute and 12-hour registers, aperture for the date at 6. Luminous steel and red baton hands. Cal. 12, copper color, 17 jewels, straight-line lever escapement, monometallic balance, shock absorber, self-compensating flat balance spring.