My 1963 accordion was a Baccalacio (not sure of spelling)..it was custom made in Italy per my (and teacher) specifications..

After I purchased it, it was sent to Sano (Hoboken NJ) to do the amp modification...Total cost was near $2,500 including the Sano amp (Still have the amp too)..
The label on the accordion says "Spezzano" ..the owner of the studio I purchased it from and one of my teachers..

My 1956 was a Collela, that was great especially after the modifications I had done...like muted grille, super custom action key bed, and amplified...

I wish I kept that one too..for nostalgic reasons..