Key: BBbSize: 4/4Bore: .772-inch ConicalBell: 17.7-inchBell Position: UprightNumber of Valves: 4Valve Position: FrontValve Type: RotaryValve Material: BrassFeatures: Nickel Silver Leadpipe and Wreath; DVS (Direct Valve Stroke) LinkageCase: NoMouthpiece: Miraphone TU31Finish: Lacquer