Clarinet. Nominal pitch: A.

Technical description: Blackwood with german silver ferrules and keywork. Five pieces: mouthpiece, barrel, upper section, lower section, bell. Enhanced Oehler system with several new features: Novel mechanism for the production of pure A₃/E₅, forked B♭₃/F₅, E♭₄/B♭₅ and forked F₄/C₆. Articulated C♯₄/G♯₅ in order to trill F♯₅-G♯₅ and to enable a legato from B₄ and C♯₅. Throat B♭-C♯₅ trill. Patent B♭ mechanism: automatic separate throat B♭ and speaker keys, intended to produce a clear throat B♭ and B₃ and a true E₃. Alternative R1 touchpiece for C♯₄/G♯₅. Patent Csharp mechanism. 17keys, 6rings, 1plate, 4black ebonite rollers. L0: T; speaker. L1: T + ring + vent; throat A♮; throat A♭. L2: Plate + ring + vent (forked C₆). L3: T + ring; cross 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: T + ring + vent; side F₄/C₆; side E♭₄/B♭₅; side trill 1-2-3; alternative touchpiece for C♯₄/G♯₅. R2: T + ring. 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.