A 20p coin has sold for an eye-watering £97 on eBay because of a massive error in its design. This rare coin has no date printed on either side. It is known as a ...

"This issue impacted less than 250,000 coins out of the 136 million 20p pieces minted in 2008 and was a result of pairing the old obverse, or heads side ... by many as one of the holy grails ...

One mistake made for the first time in 300 years caused 250,000 "mule" coins to become a collectors item, with the mistake sparking a eBay bidding war. Prior to November 2008 the date on 20p coins ...

Remarkably, fewer than a quarter of a million of these coins were produced in 2008, which means you might just find one among your ... the 136 million 20p pieces minted in 2008 and was a result of ...