Super Autavia, Case No.73827, Circa 1969
17-jewel Valjoux Cal.5 manual wind movement with column wheel chronograph signed on the bridge Heuer Leonidas, matt black dial with luminous filled Arabic numerals, white outer 1/5th second track with Arabic numerals at five second increments, luminous painted leaf hands with red tipped hour hand, red centre chronograph hand, subsidiary dials at 6 and 12 for running seconds and 30 minute recording, polished round case with snap on back, rotating bezel and glass with red inner chapter, start/stop button atop knurled crown, reset button between 1 and 2, mounted on Heuer back plate number 16.8433 by three screws at 2, 6 and 10 (one lacking) with countersunk mounting holes at each corner, together with fitted yellow Heuer box and mounting bolts, nuts and washers, case, dial and movement signed
54mm.