Model: Silverstone SmokeReference: 110.313Date: Circa 1974Movement: 17-jewel Cal.12 automaticDial: Fumeburst brown, raised luminous baton hour markers, white 1/5th second divisions, subsidiary dials at 3 and 9 for 30 minute and 12 hour recording, date aperture at 6, white pointed baton hands with luminous inserts, white centre chronograph handCase: Brushed and polished cushion form, screw down back, signed crown at 9, chronograph pushers at 2 and 4, No.309612Strap/Bracelet: Fitted steel link braceletBuckle/Clasp: Signed folding claspSigned: Case, dial & movementSize: 42mm