Rare 20p coin with subtle error can earn you 'easy' money and you could own one

You must check your change now as you could well be sitting on a fortune. It's like this one penny coin is the "rarest in UK history" and could pocket you an eye-watering £72,000.

Other bits of rare coins could include a rare 50p coin with 200,000 in circulation. But now it's time to turn your attention to the 'holy grail' of change collecting – an undated 20p which is the "top of most serious collectors' wish list". So do you have this piece? A popular Instagram user, known as @CoinCollectingWizard, recently shared information on the unique 20p coin.

Speaking with his 30,900 followers, the video starts with a voiceover who said: "Easy £50 if you have this 20p."

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The woman in clip added: "Considered by many as the 'holy grail' of change collecting, the undated 20p is undoubtably at the top of most serious collectors' wish list."

In 2008, an unknown number of these 20p coins were released into circulation without a date on either the obverse or reverse side.

It was then followed by a dye mix up after the new Royal Shield 20p coin design was introduced.

Meanwhile the Royal Mint then confirmed this is the first time in 300 years where a coin had entered UK circulation without a date.

The video added: "This makes it extremely sought-after by collectors.

"They also confirmed that while exact quantities are unknown, no more than 250,000 of these undated coins made it into circulation.

"You should always check the sold listings on secondary market sites to see how much collectors are actually willing to pay for a coin."

The rare undated 20p coin occurred at the Royal Mint in November 2008 where a small number of 20p pieces were struck without the year.

It is believed around 136million 20p coins were minted that month, with about 250,000 featuring this unique error.

The problem occurred because an old obverse design was used with the new royal shield of arms reverse, introduced in the same year.

Meanwhile the previous Tudor rose design featured the date on either side of the crown. Then when this was replaced with the shield, the date moved to the other side.

But it was moved on most 20p coins but not on the ones which feature the unique error.

While some of these undated 20p coins are selling for £50, in the past it could even go for £100. Even if it's selling for £50, that's still about 250 times its face value.