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 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 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 ...