Clarinet. Nominal pitch: A.

Technical description: Blackwood with silver plated german silver ferrules and keywork. Five pieces: mouthpiece, barrel, upper section, lower section, bell. German silver lined thumb-hole. Not full Oehler system, but with an ingenious R0 correction improving the intonation of F₃/E₃. R2 and R3rings independent; R2 closes vent below R3 hole. Vents above L1 and below L2. Alternative R1 touchpiece for C♯₄/G♯₅. Thumb rest with a device for a neck holder. 17keys, 5rings, 4black 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 G♯₃/E♭₅. R0: F₃/E₃ vent. R1: T; 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: 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.