"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 ...

A coin expert has explained that a number of 20p coins could be worth up to £60 due to a specific error - but you will need ...

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 ...

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 ...

We are all being encouraged to check our change after a rare 20p coin sold for 485 times its face value this week. The 20p piece is a “mule” coin dating from 2008 and was minted without a date on the ...

We are all being encouraged to check our change after a rare 20p coin sold for 485 times its face value this week. The 20p piece is a “mule” coin dating from 2008 and was minted without a date ...

In fact, this 20p ... tails side design, meaning the year of issue did not feature at all.” The coin collector elaborated on how in demand these coins are. “Considered by many as one of ...

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 ...