[Bruno Travi]

Here are some historical images where appears the Hohner Professional 36 produced since 1960 and the Hohner Piano 36 and Basso produced since 1970.
I have evidence that the Hohner Solist was produced in the last 60ies.

https://drive.google.com/open?id=0B1I4WRon9blLflVvSGEwRmh0OFpYVkRWcFdMTE1jLVM2UWtONUQ5SWY3NnlLaHhVb3lLTjg&authuser=0