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It's no secret some rare coins can be worth a lot of money , potentially in the hundreds or thousands. Now one 50p is thought to be incredibly valuable and it's the "most popular in circulation" right now. So do you own a version? But before you get too carried away, there's a certain detail you'll need.

TikTok user @CoinCollectingWizard, who boasts 210,500 followers, revealed the Sir Isaac Newton 50p was first issued in 2017 and it can be more valuable than other coins. In the video, which racked up hundreds of likes, he said: "This 50p could have an error making it valuable. The Sir Isaac Newton 50p is one of the most popular 50p's in circulation, shortly after it was issued in 2017.

"What you are looking for is for the obverse to have several extra lines across Queen Elizabeth's portrait. If your coin has these lines, then congratulations you have found it. "This is thought to be an error caused during the striking process, a result of what is known as a dye clash.

Interestingly, the extra lines aren't grooves scratched into the surface of the coin. But rather whiskers standing slightly proud of the surface. "Although we don't know for sure how many of these error coins are in circulation, they're thought to be extremely rare.

They've even been listed on the se.