Technical description: Ebonite with nickel plated german silver ferrules and keywork. Five pieces: mouthpiece, barrel, upper section, lower section, and bell. Original named ebonite mouthpiece marked for ligature. Curved speaker with chimney on front of the instrument. Articulated G/A trill, opened with R1 and closed by L0 and throat A♭ key. Brille on upper section with vent just below L1. All tone-holes under rings lined with german silver. Articulated C♯₄/G♯₅ opened by any L4 lever, closed by any RH plate or ring. Ring on R1 plate closes vent just below F₃/C₅ touchpiece in order to give an in-tune B₃/F♯₅. Additional L4 lever for F₃/C₅. C sharp mechanism. 15 keys, 6 rings, 1 plate, 4 ebonite rollers.
L0: T + ring; speaker.
L1: T + ring; throat A♮ ; throat A♭.
L2: T + ring.
L3: T; cross E♭₄/B♭₅.
L4: C♯₄/G♯₅; E₃/B♮₄; F♯₃/C♯₅; additional lever for F₃/C₅.
R1: T + plate + ring; side F₄/C₆; side E♭₄/B♭₅; side trills 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.
Playing accessories: Ligature, and metal reed-cap, probably original; music card-holder.
(5501) and (5502) in original leather case lined with deep purple velvet. Inscription inside "C.G. CONN CO., ELKHART. INDIANA.". Very good condition.
(5501) in B♭ and (5502) in A are a matched pair of clarinets.