The Hunt for Valuable 20p Coins
In the UK, 20p coins jingle in pockets every day, but some are worth way more than their face value. Since their introduction in 1982, a few rare versions have caught the eye of collectors, fetching prices that could change your life. From minting errors to unique designs, these coins are like hidden gems waiting to be found in your change. Here’s a look at the top five most valuable 20p coins that could be worth thousands, if not millions, in pounds.
The Bronze 20p: A £700 Jackpot
Topping the list is the super rare bronze 20p, minted by mistake in 1987. Normally, 20p coins are made of cupro-nickel, but a few were accidentally struck on bronze blanks meant for 1p coins. This error makes them incredibly rare, with only a handful known to exist. One sold for £1,400 in 2023 after being bought for just £50 years earlier. Experts say a pristine one could fetch up to £700 or more at auction, depending on its condition. Check your coins for a reddish bronze colour instead of the usual silver.
The 2008 Undated 20p: A Famous Flaw
In 2008, a mix-up at the Royal Mint led to around 250,000 20p coins being minted without a date. This was the first time in over 300 years a UK coin hit circulation without a year stamp. The error happened during a design change when the date moved from one side to the other, and the wrong dies were used. These “mule” coins are now worth £50 to £100 in good condition, with some fetching up to £200 online. Look for a 20p with no year on either side, especially from 2008.
The Blank 20p: One Side Missing
Another rare find is the blank 20p, where one side of the coin is completely smooth due to a minting error. In 2023, one of these sold for £430 on eBay because the reverse side was blank. These errors happen when a coin blank sticks to the minting die, leaving one side plain. Experts aren’t sure how many exist, but they’re super rare and can fetch hundreds. If you spot a 20p with one side totally blank, it’s worth getting it checked by a coin expert.
Isle of Man and Guernsey 20p Coins
Special 20p coins from places like the Isle of Man and Guernsey are also collectible. The Isle of Man 20p, celebrating the Manx International Rally, features a racing car design and can sell for about £5 to £11 online. Guernsey’s 20p, especially the 1982–1983 milk can design or the Bailiwick of Guernsey version, goes for £1 to £4. These aren’t legal tender in the UK but sometimes turn up in change from travellers. They’re not worth millions, but they’re still a nice find for collectors.
The 2008 Tudor Rose: A Collector’s Favourite
The 2008 Tudor Rose 20p, with its floral design and Imperial State Crown, is another to watch. Only 11 million were minted before the design changed to the Royal Coat of Arms, making it scarcer than most years. These typically sell for £3 to £6, but their beautiful design makes them popular. Check for the Tudor Rose with “2008” and a crown on the back. While not a millionaire-maker, it’s a solid addition to any collection.
Key Valuable 20p Coins to Spot
Here’s a quick guide to the top five rare 20p coins and their estimated values:
| Coin Type | Estimated Value Range |
|---|---|
| 1987 Bronze 20p | £700–£1,400 |
| 2008 Undated 20p | £50–£200 |
| Blank 20p (One Side) | £400–£500 |
| Isle of Man Rally 20p | £5–£11 |
| Guernsey Milk Can 20p | £1–£4 |
Tips for Finding and Selling
If you think you’ve got one of these coins, don’t clean it, as that can lower its value. Take it to a coin dealer or get it graded by a professional service like PCGS. You can sell on eBay, at coin fairs, or through auction houses, but always check for fakes. Look closely at your change, especially old coins from the 1980s or 2008. You never know, that 20p in your pocket could be a small fortune waiting to be discovered.