Clarinet. Nominal pitch: B♭.

Technical description: Boxwood with ivory ferrules and brass keywork. One horn ring on bell. Five pieces: mouthpiece, barrel, upper section, lower section, bell. Levers for L4, tone-hole and key for R4 mounted in a fusiform swelling. All keys except spectacle mounted in blocks. Spectacle mounted between screwed-in pillars. G♯₃/E♭₅key closes vent via spectacle for high notes. Shaped ivory thumb rest. 12keys, 2rings. L0: T; speaker. L1: T; throat A♮; throat A♭. L2: T. L3: T; E♭₄/B♭₅. L4: C♯₄/G♯₅; E₃/B♮₄; F♯₃/C♯₅. R1: T; side F₄/C₆; side E♭₄/B♭₅; side trill key for throat A-B♮ and B♭-C. R2: T + spectacle. R3: T + spectacle (forked B♭₃/F♮₅); cross B♭₃/F♮₅. R4: T; G♯₃/E♭₅. Keymount type: blocks, swelling, screwed in pillars. Keyhead type: flat round.