We are all being urged to check our change for a rare £2 coin that could be worth more than £500

Experts have highlighted the rare coin, which is still believed to be in circulation and features an error that makes it extremely valuable.

Coin collectors are being urged to check their change for a rare £2 coin that could be worth more than £500.

The coin, which is still circulating, is a 2014 release by the Royal Mint to mark 100 years since the start of the First World War.

It features the face of Lord Kitchener, famously used in the "Your Country Needs You" recruitment posters.

While a normal version of the coin will be worth no more than its face value of £2, a batch of the coins featured a rare error that boosts their value.

On some of the coins the words “Two Pounds” are missing on the head side of the coin.

According to experts at Coin Hunter, 5,720,000 of these coins are still in circulation but it appears to be “very rare” to find one without a date.

It isn’t clear exactly how many of coins with an error remain in circulation but the first of its kind sold in March 2020 for £500.

Coin Hunter experts said on Facebook: "Check your coins that feature Lord Kitchener.

"If the heads side does not show 'TWO POUNDS' - you have an error that appears to be very rare."

Royal Mint rarest coins from Queen Elizabeth II’s reign

Here is a list of rare coins compiled by the Royal Mint, with information about the year of release, denomination, design features and whether or not the coin is still in circulation:

The rarest coins minted during Queen Elizabeth II's reign (Image: Royal Mint/PA)

2019, 10p, a set of “A to Z” coins celebrating Britain. Letters Y, W and Z each had a mintage of 63,000, yes.

2019, 10p, also from the A to Z collection, the letter R had a mintage of 64,000, yes.

2019, 10p, all other letters in the A to Z collection had a mintage of 84,000, yes.

1992-1993, 50p, the coin celebrated the UK’s presidency of the Council of Ministers and the completion of the European single market. The design included a representation of a table with 12 stars, linked by a network of lines and the mintage was 109,000. The Mint said this was the lowest number of its 50ps issued into circulation, no.

2009, 50p, the design features the Kew Gardens pagoda with a decorative leafy climber twining in and around the tower, 210,000, yes.

2018 dated, 10p, the A to Z 10p collection celebrating Britain, each letter in this year had a mintage of 220,000, yes.

2015, £2, this coin paid tribute to the Royal Navy and its role during the First World War, and had a mintage of 650,000, yes.

2015, £2, it featured Britannia for the first time on a circulating £2 coin, with a mintage of 650,000, yes.

1985, 50p, the coin featured a figure of Britannia, with a shield, with a mintage of 682,103, no.

2002, £2, four £2 coins celebrating each home nation for the Commonwealth Games. Mintage figures were Scotland, 771,750; Wales, 588,500; Ireland, 485,500; and England 650,500, yes.

2012, £2, the coin celebrated the closing of the 2012 Olympics and had a mintage of 845,000, yes

2008, £2, the coin marked the centenary of the Olympic Games, with mintage of 910,000, yes.

2008, £2, the coin marked the end of the Beijing 2008 Olympics, with a mintage of 918,000, yes.

2011, £2, the coin commemorated 400 years since the King James Bible was published, with a mintage of 975,000, yes.

2018, 50p, a series of coins celebrated Beatrix Potter’s classic tales, with a mintage of 1,400,000 each for the Peter Rabbit and Flopsy Bunny designs