due to an oversight that paired an old heads side design with a new tails one, leaving the minting date off in the process. According to a report by The Mirror, the coin enthusiast has shed light on ...

This rare coin is known as a 'mule' 20p as it has no date on either side - and it is thought there could be thousands more in ...

A TINY unremarkable error on your 20p coin makes it worth 485 times its face value as a fiery eBay bidding war reveals. One ...

the date on 20p coins would be found on the tail side. However, the Royal Mint switched it so that the date would now be next to the Queen’s head. A mistake in 2008 led to the old format being used on ...