Double-belled euphonium. Nominal pitch: B♭.
Technical description: Silver-plated brass. Large bell fixed and directed upwards; small bell detachable and rotatable with ligature fixing, angled at nearly 90° from upwards. Water-keys on 2nd & 4th v.t.s. and on both m.t.s. Fitting for music card holder. Loop for Rthumb. Two loops for carriage strap. Valve type: 4 Périnet valves, 5th valve Périnet-type; bottom sprung, with circular ports; alignment by key on piston, groove on casing bore.