Bass clarinet. Nominal pitch: A.

Technical description: Blackwood with german silver crook, keywork, and bell. Five pieces: mouthpiece, crook, upper section, lower section, upturned bell. Black plastic mouthpiece marked for a ligature, "B5(star)". Two speaker keys. Speaker1 mounted on crook with chimney. All tone-holes covered. E₃ mounted on bell. 18keys. 7covered tone-holes. L0: Plate F₄/C♮₆; speaker 1 + 2. L1: Plate F♯₄; throat A♮; throat A♭. L2: Plate E♭₄/B♭₅ corresponding ring. L3: Plate; cross E♭₄/B♭₅. L4: C♯₄/G♯₅; F₃/C♮₅; E₃/B♮₄; F♯₃/C♯₅. R1: Plate B♭₃/F♮₅ via correspondence; side E♭₄/B♭₅; side F♯₄/C♯₆; trills 1-2. R2: Plate B♮₃/F♯₅ via correspondence. R3: Plate 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: The mouthpiece is a replacement.