A rare £1 coin that has been “double struck” has sold for £366 on eBay.
The unusual look has been caused by a minting error where the design has accidentally been pressed twice.
You can see where the second strike has taken place and is slightly off centre, with the words “2017 ELIZABETH” appearing twice on the coin.
The second strike lettering appears fainter in the right hand corner of the one pound piece.
On the other side of the coin, there appears to be a thicker edging around the central four flower design - consisting of an English rose, Welsh leek, Scottish thistle and Northern Irish shamrock.
The seller also notes how there is a dented edge to the coin, as the second strike was off centre.
Striking a coin is the process where an image is pressed onto a blank metal disc.
In the item description, the seller explained: “Double struck can be either on-center or off-center. The reasons for multiple strikes are as varied as the number of strikes that can occur.
“Ejection failures which prevent a planchet to correctly discharge from the striking chamber are numerous.”
This particular error coin sold for £366.78 exactly, plus £10 delivery, after attracting 22 bids on eBay following a seven-day auction.
You can see the eBay listing here.
Error coins are valuable to collectors as they could be a one-off, or one of only a handful to exist.
Do you have a rare coin in your collection? Let us know: mirror.money.saving@mirror.co.uk
Yesterday, we reported on a rare £2 coin that sold for £122 because it has a misaligned centre.
This error means the silver-coloured middle part looks like it has bled into the outer rim.
The inner circle is supposed to fit perfectly in the centre of the coin.
And last week, another "misalignment" error left a £1 coin looking like a fried egg - and this sold for £257 on eBay.
You should always be wary and do your research first before buying any coin, as there are fakes floating around online.
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.
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.
