Key: BBb Size: 4/4 Bore: .835-inch Bell: 18.5-inch Bell Position: Upright Number of Valves: 4 or 5 Valve Position: Front Valve Type: Piston 5 Valve Model-4 Piston and 1 Rotary Valve Material: Brass Features: Nickel Silver Leadpipe Case: No Mouthpiece: Miraphone TU33 Finish: Lacquer