Hello Everyone:     I was given this Wheatsone Concertina recently and I am trying to figure out its worth.   May Fair 30 button Concertina, 1950s   Its in good condition (some nicks and wear), has 6 leather bellows, looks like plastic buttons, and veneer ends. The only serial number I see is 686 (or 989)stamped on the side. It plays but I don't.   Any estimates or help with this matter would be welcome.     Thanks so much.       Randy Britt RI, USA   TRIWOOKIE@YAHOO.COM