A rare 10p coin has sold for almost £104 on eBay because of a design flaw that makes it look dented.
Error coins are particularly valuable to collectors as they could be one of a handful, or even one a kind.
In this case, the 10p has a kink in the top left-hand corner which looks like someone has pressed down a section of the coin.
The seller claims this could be down to the coin being misstruck at some point during the Royal Mint minting process.
They said: “Rare certified 10p ten pence large 1980 coin ONLY ONE KNOWN mistrike. This was certified in 1987 by the Royal Mint and returned with the certificate and returned to my father.
“The coin will be sent special delivery tracked signed for and insured for the buyer. You will receive the coin and original certificate from the Royal Mint.”
The 10p sold for £103.51 exactly, plus £6.85 delivery, following a seven-day auction that started at just 99p.
A total of 19 bids were placed on the rare coin. You can see the eBay listing here.
You should always be wary and do your research first before buying any coin on eBay, as there are fakes floating around.
Websites and Facebook groups from change experts like Coin Hunter can help you work out if a coin is the real deal or not.
You can also ask the Royal Mint to verify coins.
If you're selling a coin, be aware that there isn't a guarantee for how much you could get on eBay unless you set a reserve price.
Coins are really only worth what someone is willing to pay for them.
For more coins that could be worth a fortune, we've got a guide on the rarest error coins that could be worth up to £3,100.
Last week, we reported on how a rare 5p error coin sold for £161 on eBay after a design fault left it looking copper in colour instead of silver.
And back in December, we spotted another "misalignment" error coin after a minting mistake left a £1 coin looking like a fried egg.
This error coin sold for £257 after attracting 31 bids during a seven-day auction on eBay.
Another coin to watch out for is this bizarre 20p with no date on - it can fetch up to £60 on eBay.
And this rare version of a £2 coin launched to mark the centenary of the First World War could be worth up to £500.
A new coin to celebrate the Queen’s Platinum Jubilee was released last week - but experts predict it won't be worth much more than face value.