Clarinet. Nominal pitch: B♭.

Technical description: Stained boxwood with ivory ferrules and german silver keywork. Five pieces: mouthpiece, barrel, upper section, lower section, bell. German silver tube in thumb-hole. Alternative touchpiece for C♯₄/G♯₅. End pivoted F₃/C₅key. Additional L4key for G♯₃/E♭₅. 15keys, 4rings, 4black rollers. L0: T; speaker corresponding with first ring. L1: T + ring + vent; throat A♮; throat A♭. L2: T + ring + vent. L3: T; E♭₄/B♭₅. L4: C♯₄/G♯₅; E₃/B♮₄; F♯₃/C♯₅; additional lever for G♯₃/E♭₅. R1: T; 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; alternative touchpiece for C♯₄/G♯₅. 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: shallow cup.