Cerveny CBB 693-4PRZX Bb-Tuba, 4 rotor valves, very compact, new version with goldbrass bell, MINIBAL- joints, nickel- silver mouthpipe, nickel- silver inner- and outerslides, brass body, nickel silver bell rim, bore: 21,2mm, bell: Ø500mm, length: 95cm, weight: 10,2kg, incl. silver plated mouthpiece and case