Technical description: Blackwood with german silver ferrules and keywork. Five pieces: mouthpiece, barrel, upper section, lower section, bell. Requires a shorter bell than (5470). Equipped with a special split barrel with tuning slide in the centre. 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.
Keyhead type: modern
Keymount type: screwed in pillars.
Cased with (5470).
Previous ownership: obtained by Shackleton in part-exchange for a clarinet in E♭ by H. Bettony, Boston, U.S.A., 17.8.1968.
h. fricke, oct-dec 2006.
obtained by Shackleton in part-exchange for a clarinet in|E♭ by H.|Bettony, Boston, U.S.A., 17.8.1968.; Bequest of Sir Nicholas Shackleton, 2006.