Clarinet. Nominal pitch: A.

Technical description: Blackwood with german silver plated ferrules and keywork. Five pieces: mouthpiece, barrel, upper section, lower section, bell. Tube in thumb-hole. Alternative R1 touchpiece for C♯₄/G♯₅. No E₃/F₃ correction. Csharp mechanism. 17 keys, 5 rings, 4 black rollers. 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 + ring; E♭₄/B♭₅. L4: C♯₄/G♯₅; E₃/B♮₄; F♯₃/C♯₅; alternative lever for B♭₃/F₅; alternative lever for G♯₃/E♭₅. R1: T + ring + vent; side F₄/C₆; side E♭₄/B♭₅; side trill key for throat G♯-A or C₆-D₆; side trill for throat A-B♮ and B♭-C; alternative touchpiece for C♯₄/G♯₅, R2: Plate corresponding with 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: shallow cups.