YOU could get a huge profit from a rare 20p coin with a Royal Mint error, with many selling for several times above their face value. 

They are described as the 'holy grail of change collecting' by The Britannia Coin Company of Royal Wootton Bassett. 

One of these super rare coins has been sold for a large sum on the buying and selling site eBay.

Twenty pence pieces were struck without the year by The Royal Mint in November 2008. 

One seller has recently scooped a huge sum after selling his 20p coin for £80- 400 times its face value. 

The seller described the coin as: "Genuine Rare Undated 20p Mule No Date Coin. Good Circulated Grade.

"In clear hard plastic case."

Since the start of July, three coins have been sold on eBay for huge profits. 

One seller managed to scoop £54.99 for his coin. 

The Mint reports that of the 136 million twenty pence pieces minted that month, only about 250,000 coins were minted with this unique error.