Eagle-eyed fans have spotted something unusual about the profile of King Charles on the new 50p coin.
Coins have been a high point of interest over the years, with thousands of people collecting the currency to keep as prized possessions.
And while some coins can be marked with defects during production, others are made with purposeful little designs.
These include the Scottish £5 note, produced in 2016, that featured a very small midge, an infamous insect known for taking over the country, particularly the Scottish Highlands, in the spring and summer months.
Also in 2008, The Royal Mint released new coins designed by Matthew Dent which, when arranged together, create a royal shield of arms.
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You can see segments of the shield on UK pennies, two pences, 5ps, 10ps, 20ps and 50ps - a coinage Easter egg that often surprises international tourists.
But now, the currency in the UK is set to be replaced with coins with King Charles III face on them, following the death of Queen Elizabeth II. And some eagle-eyed fans have spotted something unusual about the profile of King Charles on the new 50p coin.
The experts at www.BritanniaCoinCompany.com, who buy and sell collectible coins, have spotted a fun hidden image in the new range of King Charles III coins being released to the UK – and it's not a coin glitch, the hidden image features in photos too.
Below is a photo of the new coin, showing the quirky little hidden image within the coin:
King Charles III has what appears to be a bird of some sort in front of his ear, where his jaw meets the upper half of his face.
Jon White, Director of www.BritanniaCoinCompany.com, commented: "Once you've seen the bird on King Charles' ear, you'll zero-in on it every time you see one of his coins and I suspect you'll never un-see it!
"I have no idea if Martin Jennings, the artist, intended to include this hidden image. If he did, I think it's clever and fitting acknowledgement of His Majesty's passion for wildlife and that he's listening to the plights our natural world faces.
"These new coins already have collectors talking, thanks to the King's choice to be shown without a crown. Supposedly, he wanted to keep the design simple and without extra embellishment.
"Lots of these Charles III coins are already in circulation but they'll become more common as more are released, meaning everyone will get the chance to spot the secret bird detail for themselves."
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