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 #150 produced at the FujiGen Gakki factory in Matsumoto, Nagano, Japan
Bought by original owner Christophe Debroise, Paris (France); date is very approximate
Latest known owner Christophe Debroise, Paris (France)