In November 2008, a small number of 20p pieces were put in circulation without the year they were produced in due to a printing error. Labelled the 'holy grail of ...

The rare 20p coin has been dubbed "the holy grail of change collecting" by The Britannia Coin Company of Royal Wootton Bassett.

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A 20p piece fetched a staggering 275 times its face value on eBay and there's a chance you might have one of these rarities jingling in your change jar. This wasn't ...

The 2015 Britannia £2 coin can be worth a good sum due to an errorCredit: Change Checker You could do this through an auction, either online, in person, or through a dealer. There are some coins which ...