Clarinet. Nominal pitch: A.

Technical description: Blackwood with silver plated german silver ferrules and keywork. Five pieces: mouthpiece, barrel, upper section, lower section, bell. Graessel patent speaker key mechanism. Speaker key has two tone-holes: the upper is activated by the thumb key and closed by the throat Akey; the lower is activated by depressing throat Akey, standing closed if speaker key is used to overblow. Alternative R1 touchpiece for C♯₄/G♯₅. Disconnactable Csharp mechanism with a roller. R4 G♯₃/E♭₅key connected with R1ring + vent to improve the notes of the high register. 15keys, 6rings, 4ebonite rollers. L0: T; speaker. L1: T + ring + vent; throat A♮; throat A♭. L2: T + ring + vent. 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. R1: T + ring + vent; 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.