The president's halt on "wasteful" penny production could cause the value of the rarest one-cent coins to surge.

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 ...

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 ...

One mistake made for the first time in 300 years caused 250,000 "mule" coins to become a collectors item, with the mistake ...

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