HEUER. A STAINLESS STEEL FLYBACK CHRONOGRAPH WRISTWATCH MADE FOR THE GERMAN BUNDESWEHR SIGNED HEUER, 3 H, REF. 1550 SG, BUND, NO. 6645-12-146-3774, CIRCA 1970 Movement: cal. VJ230, manual, 17 jewels, signed Dial: signed Case: screw back secured by four screws and engraved BUND 6645-12-146-3774, 42 mm. diam., signed