LONGINES, Cal. 13ZN , Retour en Vol Chronograph, movement No. 6313533, rare, stainless steel wristwatch with square button, [..]
CASE: Three-body, polished and brushed, concave lugs, stepped bezel, snap on case back.DIAL: Salmon with applied steel baton and Arabic numerals, subsidiary dials for the seconds and the 30 minute register, outer 1/5th seconds/minute track with five minute Arabic numerals, outer most tachometer scale. Feuille handsMovement: Cal. 13 ZN, straight line lever escapement, monometallic balance, shock absorber, self-compensating Breguet balance spring, index regulator. Dial, case and movement signed, in good conditionDIAM: 37 mm. THICKNESS: 14 mm.