I also exchange phonecards worldwide one for one .Small or large quantities of used phonecards reguired. We have a large selection of British coins in stock. And have just put up a E-Board for collectors to ask questions,etc. Also have many Links to other coin sites. Auction search lists sale items at several auction sites.
Pictures are often available.
Concise searches are best with the 3 most characteristic terms. For ready reference this site is worth bookmarking.