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 #015 produced at the FujiGen Gakki factory in Matsumoto, Nagano, Japan
Spotted on a Japanese auction site by Kosei Fukuoka (Japan)
Bought by Max Jadeite (Japan); who set to restoring the electronics
Latest known owner Max Jadeite (Japan)