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 #780 produced at the FujiGen Gakki factory in Hirooka, Nagano, Japan
Bought by DeWayne Walker (USA) from Music Go Round, Natick, MA (USA); owner before Music Go Round had died and family had liquidated his collection
Auctioned on eBay by DeWayne Walker (USA)
Sold by DeWayne Walker (USA) to someone called Heartield (USA); date is approximate