Hi Dave, Sorry I've been on holiday so missed this one. I don't expect to attend Coinex as the expenses look to outweigh the potential return but at most coin fairs, cash is king and many collectors/dealers seem to wander around with wads of the stuff. A compromise, which I for one would accept is to pay a cash deposit of say, £50 in cash and the balance by cheque, the coin to be forwarded once the cheque has cleared. You won't get to take the coin home with you, but you will get it after a couple of weeks, so all you really require is patience. Few, if any of the smaller dealers take credit cards. Oh, and as a post script, with over 30 years as a commuter, I never had any hassle either on streets or trains.