This was my grandfather's accordion. We believe it was purchased in Europe in the 40s or 50s, maybe even earlier. Possibly Italy or Germany.
There is no writing on the exterior anywhere, no model number, or anything.
The only identifying mark we were able to find is the crown logo.
I can post more pictures if needed, as well as measurements.
The case is leather with blue velvet lining.
Any help? I'm really interested in finding out some of the history behind it (Gampa passed 15 years ago), as well as getting a value on it.