Model: Master Control 1000 HoursReference: 145.8.31Date: Circa 1997Movement: 25-jewel quartz, No.2774379Dial: Black, dart hour markers, outer 1/5th second and tachymetre markers, date aperture between 4 and 5, subsidiary dials at 3, 6 and 9 for seconds, 40 minute and 12 hour recording, polished lance hands, centre chronograph hand Case: Polished round, back secured by 4 screws, crown flanked by twin pushers, No.1710Strap/Bracelet: Tan brown Jaeger-LeCoultre ostrich leatherBuckle/Clasp: Signed folding claspSigned: Case, dial & movementSize: 34mm