Clarinet. Nominal pitch: B♭.

Technical description: Cocus wood with silver plated german silver ferrules and keywork. Five pieces; mouthpiece, barrel, upper section, lower section, bell. Unnamed cocus wood mouthpiece grooved for cord. Schmidt-Kolbe throat B♭ mechanism with B♭ vent from Akey. Extra vent for throat F♯ on L2. Plate for R1 with a connection to upper section closing two tone-holes in order to give an in-tune D₄/A₅, C₄/G₅, and B₃/F♯₅. Disconnectable Csharp mechanism. Additional trill key for G-A♭. Vent hole in bell through tenon of lower section. Joint between sections lined with german silver. 19keys, 5rings, 2plates, 4black rollers. L0: T; speaker. L1: T + ring + vent; throat A♮; throat A♭. L2: T + ring + vent; F♯₄ vent; alternative cross key for F₄/C₆. L3: T + ring; E♭₄/B♭₅. L4: C♯₄/G♯₅; E₃/B♮₄; F♯₃/C♯₅; alternative lever for G♯₃/E♭₅; alternative lever for B♭₃/F₅. R1: Plate + correspondence; side F₄/C₆; side E♭₄/B♭₅; side trill keys 1-2-3. R2: Plate + vents. 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. Keyhead type: modern.