Cerveny CBB 793-4RX Bb-Tuba, 4 rotor valves, very compact, MINIBAL- joints, nickel- silver mouthpipe, nickel- silver inner and outerslides, nickel- silver bell rim, goldbrass lacquered, bore: 21,2mm, bell: Ø500mm, length: 94cm, weight: 11,0kg, incl. silver plated mouthpiece and case.