Coin collectors have been alerted to a penny coin worth “at least £150,000”.

The penny is one of the rarest coins ever produced according to experts, who say if you have one “you are rich”.

It is a pre-decimal penny from 1933 and only seven are known to exist.

TikTok user Coin Collecting Wizard told their followers that “this coin is worth at least £150,000”.

They explained: “This is the 1933 pre-decimal penny from the United Kingdom.

@coincollectingwizard This old penny is worth at least £150,000 #oldcoins #1933penny #rarecoins #coincollector #ukpennies #valuable ♬ Strange Tales - Winston Green & Robert Edwards

“Do you have this coin from 1933? If so, you are rich, but I guarantee you do not have this coin.

“How do I know? Because it is one of the rarest coins ever produced.

“There are other dates on these old coins, and some do have a decent value but it is never going to have the crazy value of the 1933 penny as only seven are known to exist.”

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. Atlantic Salmon (2023), 200,000
  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