Clarinet. Nominal pitch: E♭.

Technical description: Blackwood with german silver ferrules and keywork. Four pieces: mouthpiece, barrel, one-piece body, bell. Original ebonite Fritz Wurlitzer mouthpiece. Vent under L3 tone-hole in order to get an in-tune D₄/A₅, C₄/G₅ and forked E♭₄/B♭₅. Vent hole in bell through tenon of lower section. Boehm fingering system combined with a German, predominantly cylindrical bore. 18keys, 7rings. L0: T + ring F₄/C♮₆; speaker. L1: T + ring F♯₄; throat A♮; throat A♭. L2: T + E♭₄/B♭₅ corresponding ring. L3: T; cross E♭₄/B♭₅. L4: C♯₄/G♯₅; F₃/C♮₅; E₃/B♮₄; F♯₃/C♯₅; G♯₃/E♭₅. R1: T + ring B♭₃/F♮₅ via correspondence; side E♭₄/B♭₅; side F♯₄/C♯₆; trills 1-2-3. R2: T + ring B♮₃/F♯₅ via correspondence. R3: T + ring 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.