Hi. This is my first post here but I've been a member over at melnet for a while. I'm new to the concertina and I feel this is the best place to ask my questions:   So I just purchased this concertina from a gentleman in Canada and it's currently in transit (waiting patiently). I did quite a bit of research on Jeffries instruments but I was unable to come across another example like this one with 4 rows and 5 buttons on each row. I confirmed it's an anglo (diatonic). He played scales o