A two pound coin that is worth £20 according to one collector, could be hiding in your wallet.
The coin was minted in 2002 to celebrate the XVII Commonwealth Games in Manchester.
The two pound coin shows a figure waving a flag in the centre.
Thanks to the small circulation of the coin it is worth ten times it value, so one collector says.
Imgur user Givemeyourhate, who is an avoid collector of coins, claims his Manchester commonwealth £2 coin is worth £20.
He wrote on his post on the image sharing website: “I believe this one and the one below are both quite rare, and would fetch a pretty penny if i were to sell them! This one worth £20.”
The design was created by Matthew Bonaccorsi, and won a competition to be featured on the coin.
Royal Mint said: “The winning entry in a competition, represents celebration, victory and sportsmanship.
“It depicts a moving figure holding aloft a banner, the top of which is divided into lines symbolising the lanes of a swimming pool.”
An easy way to spot this coin is to look on the outside edge, where it reads: “Spirit of friendship. Manchester 2002.”
Just under 1.5 million were minted in the whole of Britain, making this a very rare coin.
Another rare £1 that could fetch up to £30 on Ebay is a capital cities coin.
Royal Mint said of the coin: “2010 saw the launch of an entirely new £1 coin series which focused on the four capital cities of the UK – the ‘City Series’.
“It was the first time in a ‘home countries’ £1 coin series that two coins were released in the same year.”
Another expensive and rare pound coin is the The Royal Arms, one of the most recognisable designs seen on sterling in the UK.
It was issued in 1983, and went through four further re-issues.