Contrabass clarinet. Nominal pitch: B♭.

Technical description: Blackwood with silver plated german silver crook, bell, ferrules, and keywork. Four pieces: Mouthpiece, upper section with integral crook, lower section with integral upright bell. One additional crook with extra mouthpiece. 2speaker keys both with chimney on crook. Plate for thumb. All tone-holes covered with plates. 2rings for sling. Device for music card holder. Spike. 13keys, 7plates, 4black rollers. L0: Plate; speaker 1-2. L1: Plate; throat A♮; throat A♭. L2: Plate. L3: Plate; cross E♭₄/B♭₅. L4: C♯₄/G♯₅; E₃/B♮₄; F♯₃/C♯₅. R1: Plate; side F₄/C₆; side E♭₄/B♭₅. R2: Plate + spectacle. R3: Plate + spectacle (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. Repair History: The mouthpiece is a replacement. Some pads are new, crack in upper section has been pinned and glued.