Technical description: Rosewood with german silver keys and two ferrules at the sockets. The reed-well is conical without a step. Only the R1 keys, the E♭-dup and low B keys are levers. The low C key lowers the R2 and 3 rings and closes the brille.
L0: 81.
L1: PP; 82.
L2: T.
L3: T.
L4: G♯; E♭-dup; low B.
R0: sup.
R1: T; B♭; C.
R2: R.
R3: R; F.
R4: low C; C♯; E♭.
Keymount type: pillars. Keyhead type: cups.
Stamped on bell and middle section with "G. LACROIX".