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 #893 produced at the FujiGen Gakki factory in Hirooka, Nagano, Japan
Bought by Jon Foster (USA) from the original owner (Canada); date is a wild ballpark figure
Bought by David Cole (USA) from Jon Foster (USA); date might be a month off
Latest known owner Heartfield Guitars Forum member david cole (USA); at that time the control knobs had been replaced by chrome ones