Your 20p piece could be worth a lot more than you think - if it has this very rare error. One expert has urged people to check their wallets and coin jars to see if they have one of these coins ...

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

A tiny and " unremarkable" error on your 20p coin makes it worth 485 TIMES its face value. One mistake made for the first time in 300 years caused 250,000 "mule ...

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 ...

The coin enthusiast also highlighted the significant demand for these rare pieces: "Considered by many as one of the holy grails of UK change collecting, the undated 20p is always at the top of ...