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 #197 produced at the FujiGen Gakki factory in Matsumoto, Nagano, Japan
Bougjht by István Szolnoki (Hungary) from Fabio Azevedo, Porto (Portugal)
Latest known owner István Szolnoki (Hungary)