Technical description: Boxwood with ivory ferrules and brass keywork. Five pieces: mouthpiece, barrel, upper section, lower section, bell. Bevelled covers. Straight speaker. Zig-zag L4 levers. End pivoted F₃/C₅ from above. Shaped ivory thumb rest. 12 keys.
L0: T; speaker.
L1: T; throat A♮; throat A♭.
L3: T; E♭₄/B♭₅.
L4: C♯₄/G♯₅; E₃/B♮₄; F♯₃/C♯₅.
R1: T; side F₄/C₆; 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: screwed in pillars. Keyhead type: salt spoon.
Condition: Bell cracked. Mouthpiece missing.
Inscribed on barrel with crown / ".STENGEL / .BAYREUTH" / star; on upper section with crown / ".STENGEL / .BAYREUTH" / star // "A"; on lower section "A" // crown / ".STENGEL / .BAYREUTH" / star / "DEPOSITO / BRIZZI / E / NICCOLAI / FIRENZE" / star; on bell with crown / ".STENGEL / .BAYREUTH" / star / "1696" / star / lyre / "BREVETTATO / CON DUE / MEDAGLIE" / three stars.