109. 109Y Longines. A stainless steel manual wind chronograph wristwatch Longines. Chronographe bracelet en acier mouvement mécanique Date: Circa 1940 Movement: 17-jewel Cal.13ZN manual wind, column wheel chronograph, No.6057905 Dial: Silvered, black Arabic numeral hour markers, black outer minute track with 1/5th second divisions, blue outer telemetre scale, blue inner tachymetre spiral scale, subsidiary dials at 3 and 9 for seconds and 30 minute recodring, blued steel leaf hands, centre chronograph hand Case: Brushed and polished tonneau form, snap on back, crown flanked by twin pushers, No.21153/207 Strap/Bracelet: Black crocodile leather Buckle/Clasp: Steel buckle Signed: Case, dial & movement Size: 34mm