If you've a £2 coin in your wallet, you could be sitting on a small fortune, thanks to a newly discovered printing error on thousands of coins in circulation.

Coin experts revealed that a number of 2015 Britannia £2 coins currently being used include a striking error - which could make them valuable to collectors.

The coins show the Queen's head rotated clockwise by around 150 degrees - but, with only 650,000 in circulation, and just a few thousand 'upside down', you're going to have to dig deep to find a special one.

The Royal Mint said the misalignment was "almost certainly the result of one of the dies working loose and rotating during the striking process".

The government body also said the £2 Britannia coin is one of the most scarce circulating £2 coins ever minted - it is third equal in the all-time low mintage charts.

According to experts at Change Checker there are around 3,250 of the 'inverted' £2 coins in circulation - that's around one in 200.

Yasmin Britton, of Change Checker, said: "If the inverted effigy is a consequence of the die slipping during the striking process, it is possible that there may be other variations where the Queen's head is less or more misaligned as the die has worked its way out of position."

To read the complete article, see:
How much are the coins worth?(www.mirror.co.uk/money/glaring-error-means-rare-2-9645738)