Clarinet. Nominal pitch: B♭.

Technical description: Blackwood with german silver ferrules and keywork. Five pieces: mouthpiece, barrel, upper section, lower section, bell. Thumb-hole lined with german silver. Two thumb keys for E₃/B♮₄ and F₃/C₅. System offers 4duplicate keys. Some traces of bored and closed tone-holes. 18keys, 5rings, 1german silver roller. L0: T; speaker corresponding with first ring. L1: T + ring + vent; throat A♮; throat A♭. L2: T + ring + vent; alternative cross key for F₄/C₆. L3: T; E♭₄/B♭₅ duplicate lever for F₄/C₆. L4: C♯₄/G♯₅; E₃/B♮₄; F♯₃/C♯₅. R0: E₃/B♮₄; F₃/C₅, R1: T + ring + vent; side F₄/C₆; side E♭₄/B♭₅; side trill key for throat G*Sharp-A or C₆-D₆; side trill for throat A-B♮ and B♭-C. R2: T + ring. R3: T + ring (forked B♭₃/F♮₅); cross B♭₃/F♮₅. R4: G♯₃/E♭₅; F₃/C₅. Keymount type: screwed in pillars with pins. Keyhead type: modern.