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 #020 produced at the FujiGen Gakki factory in Matsumoto, Nagano, Japan
Auctioned on eBay by eBay user misslynn910 (USA)
Auctioned on eBay by eBay user jopas-1 (USA)