Technical description: Rosewood with german silver ferrules and keywork. Five pieces: mouthpiece, barrel, upper section, lower section, and bell. Unnamed ebonite mouthpiece marked for a ligature. Curved speaker with chimney on front of the instrument. Brille on upper section with vent just below L1. C sharp mechanism. 13 keys, 4 rings, 4 brown ebonite rollers.
L0: T; speaker.
L1: T + ring; throat A♮ ; throat A♭.
L2: T + ring.
L3: T; cross E♭₄/B♭₅.
L4: C♯₄/G♯₅; E₃/B♮₄; F♯₃/C♯₅.
R1: T; side E♭₄/B♭₅; side F₄/ C₆; 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: G♯₃/E♭₅; F₃/C₅.
Keyhead type: modern.
Keymount type: screwed in pillars.
The E₃/B₄ lever for L4 is broken off.