Technical description: Silver plated metal skeleton body with silver plated german silver keywork. Three pieces: mouthpiece, barrel, one-piece body with integral bell. Original black ebonite Conn mouthpiece. Tuneable barrel. Device for a music card holder. 17 keys, 6 rings.
L0: T + ring F₄/C♮₆; speaker.
L1: T + ring F♯₄; throat A♮; throat A♭.
L2: T + E♭₄/B♭₅ corresponding ring.
L3: T; cross E♭₄/B♭₅.
L4: C♯₄/G♯₅; F₃/C♮₅; E₃/B♮₄; F♯₃/C♯₅.
R1: T + ring B♭₃/F♮₅ via correspondence; side E♭₄/B♭₅; side F♯₄/C♯₆; trills 1-2.
R2: T + ring B♮₃/F♯₅ via correspondence.
R3: T + ring B♮₃/F♯₅ via correspondence; cross B♮₃/F♯₅.
R4: G♯₃/E♭₅; E₃/B♮₄; F₃/C♮₅; F♯₃/C♯₅.
Keymount type: pillars.
Keyhead type: modern.
Playing accessories: ligature.
With original black case with blue velvet. Metal plate on lid "Choice of the artists" / marching band / "CONV". Also in case: music card holder, three pads, sand paper, cork grease, and envelope with a reed and a leaf spring, a reed in a card box "Berry & Grassmueck / 929 E. Colorado / PASADENA / 140 West Main / ALHAMBRA".
Specific usage history: possibly used in a marking band.
Specific usage history: possibly used in a marching band.