Alto clarinet. Nominal pitch: F.

Technical description: Blackwood and german silver with german silver ferrules and keywork. Six pieces: mouthpiece, barrel, upper section, lower section, bell. Speaker key with two vents, the lower is closed when it is used for overblowing (with depressed thumb plate). This is to improve intonation of throat B♭. Small vent hole in R1plate for the overblowing register. Device for a music card holder. 17keys, 7plates. L0: Plate F₄/C♮₆; speaker. L1: Plate F♯₄; throat A♮; throat A♭. L2: Plate E♭₄/B♭₅ correspondence. L3: Plate; cross E♭₄/B♭₅. L4: C♯₄/G♯₅; F₃/C♮₅; E₃/B♮₄; F♯₃/C♯₅. R1: Plate + B♭₃/F♮₅ via correspondence; side E♭₄/B♭₅; side F♯₄/C♯₆; trills 1-2. R2: Plate + B♮₃/F♯₅ via correspondence. R3: Plate + B♮₃/F♯₅ via correspondence; cross B♮₃/F♯₅. R4: G♯₃/E♭₅; E₃/B♮₄; F₃/C♮₅; F♯₃/C♯₅. Keymount type: screwed in pillars. Keyhead type: modern.