A rare 20p coin recognisable by an error in its design has sold for a whopping £57 on eBay.
The seller claims it's a “mule” coin - or “undated 20p” as no date has been minted on it.
Thousands of the coins are thought to have been released into circulation after the Royal Mint altered its design over 10 years ago back in 2008.
The altered design saw the date move from the back of the coin to the front beside the head of the Queen. But in some cases, the old die was accidentally used - meaning a batch was issued with no date on either side.
It’s estimated by The Royal Mint that no more than 250,000 coins made it into circulation, according to experts at Change Checker.
As with all rare coins, they are seen as valuable to collectors and this one cold be at the top of some collectors lists.
Why? This is because it's the first batch to have made it into circulation without a date for more than 300 years.
Bidding for the rare collectors item started at £30 but it ended up selling for almost double last week following a three-day auction in which seven people made a total of 13 bids.
Error coins can be valuable to collectors as they are likely to be a one-off.
It's hard for the Royal Mint to say exactly how many error coins could be in circulation, as it manufactures between three million and four million coins a day.
But as we know, errors do occur so if you ever have spare change lying around, it may be worth checking it out.
And if you're in doubt, you can get coins verified by the Royal Mint to check they're the real deal.
