Greetings. My name is Pat. I am new to this forum and I am not a dealer. I inherited a  Wheatstone 48 button concertina 1989 from my aunt. I suspect my grandparents brought it with them from England to the US. I am interested in getting an accurate appraisal for this instrument. It is in what I would consider overall very good condition. All of the buttons work and the bellows are in excellent condition. The case, however., is a bit tattered. According to the Wheatstone ledger it was sold i