Brits urged to check their 20p coins as one with unique error could be worth up to £60

An expert has highlighted that certain 20p pieces with a unique error might look "normal" at first glance, but upon closer inspection, you'll notice something is amiss on one side

Brits are being urged to check their 20p pieces after an expert revealed that a seemingly regular coin could be worth up to £60.

The Coin Collector UK, an authority in the field who shares his knowledge on TikTok, highlighted that certain 20p pieces with a unique error might look "normal" at first glance.

However, upon closer inspection, you'll notice that one side of the coin appears to be missing something crucial.

In a video posted on the platform, The Coin Collector UK said: "One of these 20p coins is worth £60, here's the one that you want to be looking out for in your change."

He further detailed that collectors should be on the lookout for a shield design 20p coin that lacks a date on the head side.

"So, what you want to be checking for on all of your shield 20p coins is on the back of the coin," he instructed.

"If it doesn't have a date on the bottom, then this is a very rare mule error. In 2008 the Royal Mint accidentally minted 20p coins with no date."

It's believed that as many as 250,000 of these coins could be in circulation.

The Coin Collector added: "As with any error the exact numbers produced are known but it's estimated between 50,000 and 250,000 of these coins managed to make their way into circulation."

He went on to explain how the mistake occurred, revealing that the 20p definitive design changed from the Tudor rose to the shield in 2008.

"You can see on the Tudor rose coin the date is actually on the front, so there was no need for a date on the obverse head side of the coin," he said.

"So the Royal Mint accidentally minted the shield coin with this obverse by mistake and this is what led to the mule error being produced. They tend to sell for around £50 to £60."

At the time of writing, one of these erroneous coins was listed on eBay for £120, while another was up for grabs at £100.