As shared by TikTok user UKCoinHunt, the minting error appears on a small number of the commemorative Sir Isaac Newton 50p pieces.
The 50p coin was minted and issued in 2017 and the reverse design sees elements of Proposition 11 from Book One of Newton’s Principia Mathematica.
The error on the coin relates to the die clash that left incorrect marks on the 50p coin.
The 50p coin error that makes it extremely valuable
Speaking on TikTok, the coin expert said: “You’ve got the normal one that’s completely fine.”
Adding: “When I show you the error version, if I spin this around (to the bust of Queen Elizabeth II), as you can see, you’ve got the scratches.”
Explaining: “You can see the lines coming out like that, this is the die clash error version.”
Up close, the error looks like two parallel lines on the left of the late Queen’s neck.
@uk.coin.hunt Error to look out for on this coin 👀 #ukcoinhunt #50p #coins #fyp #rarecoins #errorcoin ♬ original sound – UkCoinHunt
When the coin was first released, the Royal Mint explained the reason behind its creation: “When Sir Isaac Newton came to The Royal Mint, Britain’s finances were approaching crisis.
“Up to one in ten circulating coins were believed to be forged. His vision of matchless quality led him to root out and prosecute notorious counterfeiters, improve assaying techniques (the way coin quality is checked) and refine weights and measures to standards never seen before.
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“In 1699 Newton became Master of the Mint. After overseeing the new coinage for the accession of Queen Anne in 1702 he went on to supervise the process of bringing Scottish coinage into line with English coinage, following the Union of England and Scotland in 1707.
“Thanks to Newton’s vision Royal Mint coins remain unrivalled in their accuracy and purity to this day.
“This 50p coin is struck to Brilliant Uncirculated standard. It marks the 375th anniversary of Newton’s birth.”