Technical description: Cocus with german silver keys, ferrules and bell rim. Five pieces: mouthpiece, barrel, upper section, lower section, bell. Mouthpiece with a long, wide table and ligature. Barrel slightly bulbous. Upper section: Long A♭ key. Tone-hole for the speaker at the front of the instrument; speaker chimney bowl-shaped. Lower section: thumb rest shaped. Leaf and needle springs. Bell continuous.
L0: T; speaker.
L1: T; throat A♮.
L2: T + spectacle; throat A♭.
L3: T + spectacle; 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 (Barret action); 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: pillars.
Playing accessories: ligature.
With silver-plated reed-cap.
Illustration references: Dullat 2001, p.71.
t.k. dibley, 1992; a.|myers 23.11.92 (in); h. fricke, july 2005.