As it is so unusual it has meant the coin has been dubbed the "holy grail" of change collecting making it much sought after. The 20p coin was highlighted on Instagram by Coin Collecting Wizard.

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

This article is brought to you by our exclusive subscriber partnership with our sister title USA Today, and has been written by our American colleagues. It does not necessarily reflect the view of ...

We are all being urged to check our change after a rare Royal Mint 20p coin sold for 450 times ... and these sell for around £5. In 2019, 500 million coins were produced, with three new 50p ...

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