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 #806 produced at the FujiGen Gakki factory in Matsumoto, Nagano, Japan
Bought by Dmitry Kramushchenko (Belarus) from someone in Moscow (Russia); date is approximate
Latest known owner Dmitry Kramushchenko (Belarus)