Below you will find an overview of the known dated events in this instrument's history. If you have any to add, please feel free to contact me.
Heartfield-related instrument #236 produced at the FujiGen Gakki factory in Matsumoto, Nagano, Japan
Bought by someone in Florida (USA) from what may have been the original owner; date is very approximate
Bought by Istvan Szolnoki (Hungaria) from the previous owner (USA)
Latest known owner Istvan Szolnoki (Hungaria)