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 #322 produced at the FujiGen Gakki factory in Matsumoto, Nagano, Japan
Bought by original owner Artis Falkner (USA)
Control knobs replaced by less slippery ones; date is approximate
Latest known owner Artis Falkner (USA)