Wow! how does anyone find any accordion for $20. I have never been so lucky, but I think with some work this will be a nice accordion. I have a question about the model nomenclature- is M stand for medium? and would that be like a 17.5 inch keyboard? I have a 2 reed giulietti that is a MF and I think its a 18 inch keyboard. Medium Full? Sometimes its hard for me when seeing pictures to figure if an accordion is full size or not- Especially when people refer to full size just meaning there are 120 bass and 41 keys. I always thought full size meant like 19 or 19.5 inch keyboard.