The coins have been dubbed the 'holy grail' of change collecting and if you find one it could be worth a lot more than 20p ...

An unusual coin could net its owner over 250 times its face value after an error when it was made. The rare 20p coin was one of an unknown number released by the Royal Mint without a date.

A RARE 50p coin first issued 15 years ago has sold for over 300 times its face value – and you could have one in your wallet.

A minting error on a small number of 2008 twenty pence coins has made them highly desirable, with some expected to sell for as much as £100 ...

The 20p piece is a rare “mule” coin dating from 2008, and fetched £90 at auction. The coin was minted without a date due to an error and quickly became a sought-after collector’s items.

Chris Yang, co-founder of Coins Value, has revealed three key indicators that your old coins might be worth a pretty penny ...

The Royal Mint has revealed the 9 rarest £2 coins in circulation in the UK today. The £2 coin has ... coin will be worth no more than its face value of £2, a batch of the coins featured a ...

The Royal Mint has revealed the 9 rarest £2 coins in circulation in the UK today. The £2 coin has become a hidden treasure with our change, with some of the rarest examples of the coin being worth ...