This is a beautiful chromatic button accordion from Piermaria, made in Italy.
A 3 voice musette tuned C system accordion with a 37 note range, G to G. The register markers look like a double octave but this is 3 8' reeds tuned to a rich and full musette.
The left hand is a 96 bass with 2 registers.
With dural reeds this accordion is crisp and bright and beautifully balanced between the hands.
It has had a midi system installed at some time, now removed, so there are some small holes in the grill. These are purely cosmetic. The left hand side plate also has some signs of previous installations.
This accordion is second hand