A rare 50p coin has sold on eBay for £650 and there are millions more in circulation.
You may want to check your pockets and the back of your sofa as the coin has made one lucky seller more than a thousand times its value.
The special 50p was made to mark the UK leaving the European Union back in January 2022, reports The Echo.
To mark the official date of Brexit on January 31, 2020 the special coins were created with 's' engraved on one side.
On the other is a picture featuring The Queen's head.
There are estimated to be as many as ten million so called 'Royal Mint Brexit' 50ps still in circulation.
Just after the coin's launch, some were selling online for around £10-20, but with many having now ended up in the hands of collectors, the price of those remaining has jumped up.
One coin sold for £650 on January 23, and other ambitious sellers are asking for as much as £865 for theirs.
However, if you do find you own one of the special 50ps, you may not be in for a huge sale, as you may be undercut.
Some sellers are listing theirs for considerably less, perhaps not realising how much they could get.
ChangeChecker expert Alexandra Fiddons previously told The Mirror : "The 50p was teased for a long while before the UK's official exit from the European Union and when it was officially released into circulation, people were eager to snap them up for their own collections.
"This coin marks an incredibly significant moment in British history and it's possible that people who aren't usually interested in the hobby, may have been tempted to secure this 50p to commemorate the event forever."
Speaking on what makes a coin 'rare', she said: "Sometimes we see coins listed for prices well above their face value on the secondary market.
"Sometimes this is driven by low mintage figures, meaning there are fewer coins for people to collect, but it can also be driven by the popularity of the theme."
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