Piano / button accordion produced approx. 1925-1930. It’s an American crossing of the same model as Pietro Frosini used in the variety shows back then. A 3-row chromatic button accordion. The black keys function as a sort of auxiliary row for the 2nd row.
Donated to Harmonikamuseet - Fyn, Denmark - run by Christian Boeriths
Donated to Harmonikamuseet - Fyn, Denmark - run by Christian Boeriths