A rare 50p London Olympics coin with a hidden design defect recently sold for £1,500. Could your spare change be worth ...

As with just about any asset, a coin's value is determined by its market demand. This means that coins in short supply often ...

You never know when you might come across a valuable error coin, so it helps to know what to look for. Error coins can be divided into the following general ...

You must be keen-eyed, however, as these sought-after coins must harbour specific minting errors that collectors are desperate to snap up. An expert, known online as the Coin Collecting Wizard ...

You must be keen-eyed, however, as these sought-after coins must harbour specific minting errors that collectors are desperate to snap up. An expert, known online as the Coin Collecting Wizard, ...