LONGINES FLYBACK CHRONOGRAPH 13ZN, CIRCA 1942 Three-body circular stainless steel case, signed, n. 21925 - 75, flat bezel, stepped lugs, snap on caseback, EFCO logo, rectangular pushers. Not original strap and buckle. Silvered two-tone dial, signed, "anti-magnetique", bâton indexes and painted Arabic 12 and 6 numerals, minute track and 1/5th of seconds fraction, outer red telemetric and blue tachymeter graduations, subsidiary dials for seconds and 30-min register, bâton hands. Manual-winding caliber 13ZN, gilded, signed, n. 6398571, column wheel system with retour en vol function, lever escapement, monometallic balance with screws, blued Breguet hairspring, shock-absorber. Isn't possible to obtain the extract. Diameter Ø: 35,5 mm Note: working. TAGS: watch - orologio