Hohner Basso Accordion

I have just acquired an old 25-key Basso, no.402B. It needs some TLC, but is basically sound. Any Basso fans out there?262245149862_1

This is a bass accordion, with no treble reed blocks and the bass notes played on the keyboard - correct? Used for accordion orchestras I guess.

Exactly so. Lovely warm bass sounds. Great for accompaniment.