Clarinet. Nominal pitch: B♭.

Technical description: Silver body with silver keywork. Four pieces: mouthpiece, barrel, one-piece body, bell. Silver barrel with a tuning slide. Patented double wall metal clarinet on thermos flask principle: Thermo clarinet. Two vents on top and on bottom of the instrument allow access to space between walls. The invention should isolate the inner tube against coldness in order to avoid condensation. L3 tone-hole offset. Articulated C♯₄/G♯₅ opened by L4, closed by any RH ring. 17keys, 6rings. L0: T + ring F₄/C♮₆; speaker. L1: T + ring F♯₄; throat A♮; throat A♭. L2: T + E♭₄/B♭₅ corresponding ring. L3: T; cross E♭₄/B♭₅. L4: C♯₄/G♯₅; F₃/C♮₅; E₃/B♮₄; F♯₃/C♯₅. R1: T + ring B♭₃/F♮₅ via correspondence; side E♭₄/B♭₅; side F♯₄/C♯₆; trills 1-2. R2: T + ring B♮₃/F♯₅ via correspondence. R3: T + ring B♮₃/F♯₅ via correspondence; cross B♮₃/F♯₅. R4: G♯₃/E♭₅; E₃/B♮₄; F₃/C♮₅; F♯₃/C♯₅. Keymount type: pillars. Keyhead type: modern.