These coins have changed hands several times and have been named for the coin collectors who acquired them. They’re known as the Norweb, Eliasberg, Walton, McDermott and Olsen pieces.

Collectors young and old ... There's a shop in our local market where you can buy 1kg of old foreign coins for £10. I'm trying to get at least one coin from every country in the world.

An expert has urged people to check their wallets and coin jars for a seemingly ordinary 20 pence piece that could actually be worth up to £80. While this coin may look normal on first glance, it ...