Clarinet. Nominal pitch: B♭.

Technical description: Blackwood with german silver ferrules and keywork. Five pieces: mouthpiece, barrel, upper section, lower section, bell. Throat 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 B₃/F♯₅. Vent hole in bell through tenon of lower section. Disconnectable Csharp mechanism. Connection between sections at front of the instruments. Lower section tenon lined with german silver. Vent hole in bell through tenon of lower section. 18keys, 5rings, 1plate, 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 B♭₃/F₅; alternative lever for G♯₃/E♭₅. R1: Plate + correspondence; 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. R2: T + ring + vent. 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.