Clarinet. Nominal pitch: B♭.

Technical description: Cocus wood with german silver ferrules and keywork. Five pieces: mouthpiece, barrel, upper section, lower section, bell. Original named mouthpiece grooved for cord. Two barrels marked "B". Interesting variant of keywork that allows a perfect E₃-F♯₃ trill at the bottom of the instrument both from the left and the right sides. The "correspondence" is on the front of the instrument (with adjusting screw) instead of on the side. Vent corresponding with speaker and thumb ring: it is opened when only the speaker is used in order to give an exact throat B♭, and is closed when the thumb closes the hole to overblow. Socket of lower section lined with german silver. Vent hole in bell. Boehm fingering system combined with a German, predominantly cylindrical bore. 17keys, 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 + ring; cross E♭₄/B♭₅. L4: C♯₄/G♯₅; F₃/C♮₅; E₃/B♮₄; F♯₃/C♯₅. R1: T + ring B♭₃/F♮₅ via correspondence; side E♭₄/B♭₅; side F♯₄/C♯₆; trills 1-2. 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. Repair History: Tone-holes of lower sections has been filled with glue in order to improve the tuning.