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 #705 produced at the FujiGen Gakki factory in Hirooka, Nagano, Japan
Auctioned on eBay by eBay user haruyanag_0 (Japan); at that time it was fretless with different dot markers
Auctioned on eBay by eBay user eol-42 (Japan); at that time it was fretless with different dot markers