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 #436 produced at the FujiGen Gakki factory in Matsumoto, Nagano, Japan
Bought by Richard Calv (USA) from the original owner from New Jersey (USA); date is approximate
Auctioned on eBay by Richard Calv (USA) (four times)
Auctioned on eBay by Richard Calv (USA)
Seen for sale from Javier Martinez (Mexico)