Model: SpeedmasterReference: 2998-2Date: Circa 1959Movement: 17-jewel Cal.321 manual wind, column wheel chronograph, No.17761291Dial: Black, luminous baton hour markers, white outer 1/5th second divisions, subsidiary dials at 3, 6 and 9 for seconds, 30 minute and 12 hour recording, polished dagger hands with luminous inserts, lollipop centre chronograph handCase: Brushed and polished tonneau form, screw down back, inner cap, black calibrated tachymetre bezel insert, crown flanked by twin pushersStrap/Bracelet: Black calf skinBuckle/Clasp: Stainless steel buckleSigned: Case, dial & movementSize: 39mm Accompaniments: Omega service case, plexi glass, chronograph pushers and further parts replaced during service