Technical description: Boxwood with ivory ferrules and brass keywork. Five pieces: mouthpiece, barrel, upper section, lower section, bell. Brass tube in thumb-hole. F₄/C₆ for L3 and side E♭₄/B♭₅ for R1. End pivoted F₃/C₅. Pinned for strength. 13 keys.
L0: T; speaker.
L1: T; throat A♮; throat A♭.
L3: T; cross F₄/C₆.
L4: C♯₄/G♯₅; E₃/B♮₄; F♯₃/C♯₅.
R1: T; side E♭₄/B♭₅; side trill key for throat A-B♮ and B♭-C.
R3: T; B♭₃/F♮₅; side B♮₃/F♯₅.
R4: F₃/C₅; G♯₃/E♭₅.
Keymount type: pillars on plates. Keyhead type: salt spoon.
Condition: Mouthpiece missing.
Repair History: Cracked and chipped bell had been restored.
Previous ownership: Lunden-Welden, Stockholm, 1992.
Inscribed on barrel and bell "H KASER / B"; on upper and lower section "H KASER / HAMBURG / B"; on lower section "Hamburg" (upside down).
Lunden-Welden, Stockholm, 1992.; Bequest of Sir Nicholas Shackleton, 2006.