A 50p coin has been sold for £400 on eBay because of a "printing error" on the piece.
The Girl Guide fifty pence piece came out in 2010 to celebrate 100 years of the girl guides, and, with 7.4million in circulation, it's not considered especially rare amongst collectors.
But, in this case eBay user Levmineu0 spotted something that makes it potentially valuable, and, as a result, has managed to trade it for £400 – reports Mirror Online.
The coin's description said: "Rare 50 Pence Coin – Girls Guidance 2010 – Royal Mint Error Coin."
When was the coin released?
The Girl Guiding fifty pence piece launched in 2010 to celebrate the 100th anniversary of the movement being founded. It was designed by Royal Mint architects Jonathan Evans and Donna Hainan.
The reverse of the coin features the famous three leaf 'trefoil' logo, which is the global symbol of Guiding and represents the three-fold promise.
How rare is it?
A normal version of the Girl Guide 50p can be picked up for around £4. That's because more than 7,410,090 of them were struck in 2010.
For context, the rarest 50p in circulation is the 2009 Kew Gardens one, with just 210,000 minted.
According to coin experts at Change Checker, this specific style of 50p ranks 57th in a list of rarest 50p pieces.
However, this specific edition has traded hands for £400 due to a so-called error – although the seller has given no indication as to what it could be.
We asked Change Checker for details of any known printing errors within the Girl Guides collection, however it was unaware of any registered flaws.
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However, it's not the first time one has exchanged hands for this value.
In 2018, a Girl Guide 50p was listed for £825 on eBay due to an apparent error.
The opportunist claimed his coin was worth £825 because of 'rare errors' that occurred during manufacturing.
The coin collector uploaded it to eBay with an explanation as to what made it gain a staggering 164,900 percent increase in value.
The seller wrote: "An Extremely Rare 50p 2010 coin.
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"UNIQUE Mis-shapen bottem left star and centre dipressed star is a PERFECT star shape in centre small clover – this is not PERFECT on all coins, it is also a sign of authenticity.
"One of the rarest and most valuable 50p coins in circulation."
I have one of these coins – will it sell for a fortune?
Of course, even if one of these coins turns up in your change and you decide to list it online, it's not guaranteed to sell for the same price.
That's because the number of 'error' coins currently in circulation is unknown – if there are any at all.
If you think you have a valuable coin, the best thing to do is ask the Royal Mint to check that it's genuine.
While it won't be able to tell you how valuable it is, it can provide you with a letter to confirm its authenticity.