Clarinet. Nominal pitch: B♭.

Technical description: Rosewood with german silver ferrules and keywork. Five pieces: mouthpiece, barrel, upper section, lower section, bell. Patented L4 Pupeschi variant: Articulated C♯₄/G♯₅, opened by L4, closed by R1 in order to enable, for example, B₄-G♯₅ legato and F♯₅-G♯₅ trill. Tuning hole in bell through tenon. 15keys, 6rings, 5rollers. L0: T; speaker corresponding with first ring. 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*Sharp-A or C₆-D₆; side trill for throat A-B♮ and B♭-C. 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.