IT might be time to dig out the loose change from the back of the sofa because your coins could be one of the rarest in Britain.
Individual coins could be worth up to £1,500 if sold to the right collector, while if you had all 10 of them you could be looking at a wallet worth £7,200.
We’ve taken a look at some of the rarest coins in circulation which have since been found to be worth a fortune so you can compare your change at home.
The Royal Mint manufactures four million coins a day, and while mistakes do happen, they’re really rare.
This makes error coins the most valuable type to collectors and could be worth thousands.
But it’s not just error coins that could be valuable – limited edition designs could be worth hundreds of pounds too.
Here are the ones you need to look out for:
London 2012 Olympics Aquatics 50p first design – up to £1,500
The aquatic 50p was one of the 29 coins minted to celebrate the London 2012 Olympics – but the first batch was made with a mistake on it.
Originally, the coin was made showing water passing over the swimmer’s face, but it was modified so you could see her clearer.
Experts reckon the earlier version of the coin could be worth up to £1,500.
1983 New Pence 2p coin – up to £1,250
Every 2p coin minted between February 1971 and 1982 say “new pence” on the front, while those released after this date say ‘two pence’.
Except one batch made in 1983 were accidentally minted with the old working – new pence – on the front.
Over at Coin Hunter, they reckon it could be worth up to £1,250 to the right buyer.
Silver 2p (1971 to 1992) – more than £1,000
Two pence coins are supposed to be made from a bronze coloured metal but some were accidentally minted on the wrong base.
These were made between 1992 and 2018 but no one knows for sure how many there are, making them attractive to a collector.
James Weller from Kent found one in his change at home. He hasn’t sold it yet but professionals believe it could be worth more than £1,000.
Zinc £2 coin – between £800 and £1,300
Normally, £2 coins are made with nickel brass and copper zinc but one sprung up in someone’s change made entirely from nickel brass.
They valued it as being worth more than £1,300 but Coin Hunter felt £800 was a more likely figure.
Bronze 20p – up to £750
This ultra-rare bronze 20p was minted on a blank 1p by mistake back in 1987.
It’s not clear how many of these types of coins exists but a similar one sold for £1,350 at auction so this one could be worth just as much.
Silver 2p (1992 to 2018) – up to £600
Back in 2016, a 2p coin ended up on a silver coloured base rather than a bronze one.
It could easily be mistaken for a 10p coin so it’s worth double checking all of your silvers that have a lion on the tails side and are dated after 1992.
One sold on eBay for £1,350 after a pensioner found it gifted in a charity collection tin.
£1 with two dates – up to £500
A batch of new £1 coins were accidentally minted with both 2016 and 2017 on them.
You’ll need to check the inscription along the rim of the coin – a magnifying glass will help – to see if it’s the same dates that’s printed on the face.
A veteran coin expert has labelled the rare find as one which could fetch up to a cool £3,000 – but only if it’s verified by the Royal Mint.
Kew Gardens 50p – up to £160
Only 210,000 of these coins were ever minted making it one of the rarest and most valuable to collectors.
£2 coin with the Queen’s head upside down – up to £90
A small number of 2015 Britannia £2 coins showing the Queen’s head upside down are in circulation, and they could be worth up to 45 times face value.
Around one in every 200 shows the Queen’s head rotated clockwise by around 150 degrees.
Coin Hunter previously told The Sun that it could be worth around £90 on eBay.
2002 Commonwealth Games Northern Ireland – £50
The most recent Change Checker Scarcity Index shows that this the most sought after £2 coin, based on its mintage and how sought after they are.
One recently sold on eBay for up to £50, even though it had been in circulation it was also in a pretty good condition.
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