Technical description: Ebonite with german silver ferrules and keywork. Five pieces: mouthpiece, barrel, upper section, lower section, and bell. Original named ebonite mouthpiece marked for ligature. Curved speaker with chimney on front of the instrument. German silver tube in thumb-hole. Brille on upper section with vents just below L1 and L2. C sharp mechanism. 13 keys, 5 rings, 4 ebonite rollers.
L0: T; speaker.
L1: T + ring; throat A♮ ; throat A♭.
L2: T + ring.
L3: T + ring; cross 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.
R2: T + spectacle.
R3: T + spectacle (forked B♭₃/F♮₅); cross B♭₃/F₅,
R4: G♯₃/E♭₅; F₃/C₅.
Keymount type: screwed in pillars.
Keyhead type: modern.
Playing accessories: Ligature and reed-cap.