I have listed a Wheatstone C/G * Linota* 30 button on ebay. This concertina was recently restored by Wim Wakker and the Concertina Connection.
Here is the link: http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=251265826124
I prefer selling off ebay. If a member of this concertina buys this concertina then a donation will be made to Concertina.net.