Guerrini Berkeley - looking for more information

[rickzn]

I had learned accordion for a few years, then I have more focused on piano after that. I still loves accordion very much and would like to buy one to play sometimes, as well as my music instrument collection. I found a ~50 years old 120-bass Guerrini Berkeley, 11 registers at treble side and 5 at bass side. I haven't tried it yet and would like to know more about this model. And then I will decide to to go. Also I saw another brand "Guerrini and sons". What's different between those two brands. Thanks in advance.