Technical description: Blackwood with german silver ferrules and keywork. Five pieces: mouthpiece, barrel, upper section, lower section, bell. Tone-hole for B₃/F♯₅ through lower tenon of upper section. Curved speaker with chimney on front of the instrument. Long tailed British throat A♭ key. Barret action. C sharp mechanism. 1 extra trill key. 13 keys, 4 rings, 4 ebonite rollers.
L0: T; speaker.
L1: T; throat A♮.
L2: T + ring; throat A♭.
L3: T + ring; cross E♭₄/B♭₅.
L4: C♯₄/G♯₅; E₃/B♮₄; F♯₃/C♯₅.
R1: T; Barret action (F₄/C₆; E♭₄/B♭₅); side trill key 1-2.
R2: T + spectacle.
R3: T + 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
Signature marks: Inscribed on upper section with star / monogram EJA / "E.J. ALBERT / A BRUXELLES" / star; on lower section and bell with star / "E.J. ALBERT / A BRUXELLES" / star; on barrel with star / "E.J. ALBERT" / star.
Crack in bell. Mouthpiece missing.
A pair with (5471) in A.
H. Fricke, Oct-Dec 2006.
obtained by Shackleton in exchange for a clarinet in|E♭ by H. Bettony, Boston, U.S.A., 17.8.1968.; Bequest of Sir Nicholas Shackleton, 2006.