The 20p piece is a rare “mule” coin dating from 2008, and fetched £90 at auction. The coin was minted without a date due to an error and quickly became a sought-after collector’s items.

The 20p piece is a rare “mule” coin dating from 2008 ... How to spot the Royal Mint's rarest 50p coin selling for more than £100 The rarest is the Kew’s Garden 50p, which was designed to mark the ...

The 20p piece is a rare “mule” coin dating from 2008 ... How to spot the Royal Mint's rarest 50p coin selling for more than £100 Royal Mint reveals the 18 rarest coins minted under Queen ...

The 20p piece is a rare “mule” coin dating from 2008 ... In 2019, 500 million coins were produced, with three new 50p designs. These included one of Arthur Conan Doyle’s Sherlock Holmes ...