From checking the back of the sofa to asking for extra change at the till finding the new King Charles coronation 50p coin could make it worthwhile.

The new 50ps bearing King Charles's official coin portrait is being sold on eBay for more than their face value. 

Five million of the coins, celebrating Charles' coronation earlier this year, were received by the Post Office and UK bank branches in August. 

One seller sold their commemorative coin for £10 - 20 times more than the initial face value. 

Featuring a design by Royal Mint coin designer Natasha Jenkins, the coins are the second 50ps to enter circulation bearing Charles' official coin portrait.

The first was the memorial 50 pences, which entered circulation in December 2022, marking the transition from the late Queen to the King.

Rebecca Morgan, director of commemorative coin at the Royal Mint, said: "This is a special moment for the nation, as members of the public will have the opportunity to find a piece of history in their change.

"We anticipate the coronation 50p coins will be highly sought after among coin collectors and members of the public keen to own a piece of British history.

"The Royal Mint has had the honour of striking coins for every British monarch since Alfred the Great and we are proud to continue that long history with the introduction of His Majesty's official coinage."