A rare King Charles III £1 coin could be worth thousands of pounds after an error was discovered on it.

The £1 piece has been spotted by online coin enthusiasts after they entered circulation in August.

Three million of the “bee” £1 coins have made their way into tills and into our pockets since then.

However, a version with an error was also entered into circulation, and experts think it could be worth thousands.

@coincollectingwizard New error found on bee £1 coin! #foundcoin #errorcoin #onepound #coincollecting #found #errors #rarecoin ♬ Originalton - yannicklowack

TikTok user @coincollectingwizard highlighted the error in a video.

They explained: “All new £1 coins are made with two metal rings.

"The outside is made from nickel brass while the inside is nickel-played brass alloy.

"But the rare £1 coin that has been found recently is all one colour."

Five Incredibly Rare and Valuable British Coins

What makes a coin valuable?

The 50 pence piece has become the most valued and collected coin in the UK, with many collectable designs appearing on its heptagonal canvas.

Its 27.5mm diameter makes it the largest of any British coin, and allows space for decorative pictures. It has often been used to celebrate big events over the past 50 years of British history.

The rarest coins tend to be of the greatest value, with the mintage (number of coins with each design made) being the fundamental attraction for collectors.

Along with the design, other aspects of the coin which increase value are the condition of the coin and whether it has an error in its design.

The way in which it is sold can also determine the coin’s value - while some coin collectors will bid vast amounts of money on ebay or at auction, others opt for more robust valuations by selling via a coin dealer.

Royal Mint top 10 most valuable 50p coins

Here is a list of the top 10 most valuable coins, when they were made and how many were minted:

  1. Olympic Aquatics (2011), unknown
  2. Kew Gardens (2009), 210,000
  3. Olympic Wrestling (2011), 1,129,500
  4. Olympic Football (2011), 1,161,500
  5. Olympic Judo (2011), 1,161,500
  6. Olympic Triathlon (2011), 1,163,500
  7. Peter Rabbit (2018), 1,400,000
  8. Flopsy Bunny (2018), 1,400,000
  9. Olympic Tennis (2011), 1,454,000
  10. Olympic Goalball (2011), 1,615,500