Leonidas Military Chronograph with Flyback, 43mm steelcase, screwed back (with 4 screws),. This is the first version of the Heuer BUND chrono, with the very rare Valjoux 222 movement (column wheel, manual wind) whereas the Heuer has the Valjoux 230 movement. Engraved on back: E.T. No 8XX, italian or french Airforce, 100% original, in very good condition. Asking $ 1,600.00 plus shipping.