Clarinet. Nominal pitch: B♭.

Technical description: Boxwood with horn ferrules and brass keywork. Six pieces: mouthpiece, barrel, upper section, middle section for the fingers of the right hand, lower section with keys, bell. Original mouthpiece grooved for cord. Levers for L4, tone-hole and key for R4 mounted in a fusiform swelling. B♭₃/F♮₅key on a wide brass lever operating with a needle spring (Stiegler). Integral wooden bell rim. 12keys. L0: T; speaker. L1: T; throat A♮; throat A♭. L2: T. L3: T; E♭₄/B♭₅; side F₄/C₆. L4: C♯₄/G♯₅; E₃/B♮₄; F♯₃/C♯₅. R1: T; side trill key for throat A-B♮ and B♭-C. R2: T. R3: T; cross B♭₃/F♮₅; side B♮₃/F♯₅. R4: T; G♯₃/E♭₅. Keymount type: turned wooden ring, blocks, swelling. Keyhead type: flat round.