Rare one pound coin with unique error and people would 'pay premium to own it'

Some coins are worth a mega jackpot, with collectors previously going wild for a one pound coin that is the 'rarest of 2025'. Now people are on the hunt for another rare coin which could be worth up to £1,000 if you locate it in your pockets.

Now Instagram user @CoinCollectingWizard, who boasts 34,000 followers on the platform, recently discussed the special coin which is called the 'Partial Collar Error'. It's so unique that collectors across the UK are bound to "pay a premium to add to their stash". So do you have one of these lingering in your pockets?

In a post, he said: "Have you ever seen a coin like THIS? It's called a Partial Collar Error – and collectors LOVE finding them!"

• Aldi launches £2.50 version of Marks & Spencer’s viral Christmas snack tins
• Woman who lost half her body weight with AI app says 'it's actually been so simple'

Talking about the one pound, he added: "Normally, when a coin is struck, it sits perfectly inside a metal collar that gives it that neat, round edge.

"But sometimes, the coin isn't seated properly... part of it slips out of the collar.

"The result? A coin that looks slightly off-centre, mis-shaped, or with a strange 'lip' around the edge."

He claimed these kind of coins "aren't damage" but are "true minting errors". The expert continued: "And error collectors will pay a premium to add them to their collections.

"Value depends on the coin, the size of the error, and demand... but trust me, people WANT these!"

This kind of error occurs when the collar, the device which holds the planchet (blank coin) in place during striking, only partially confines the planchet, resulting in an uneven edge and rim on the coin.

Instead of the full, normal rim, one portion of the edge will show the impression of the collar, while the other part might appear smooth, angled, or splayed outwards.

And often this creates a "railroad rim" effect on reeded coins.

Experts believe one of these errors can be worth from £5 to over £1,000, with the value depending on the coin's rarity, condition and, of course, demand.

These errors are one-of-a-kind or extremely uncommon so could even command higher prices.

If you think you own one of these, it's best to get it valued by an expert who can reveal its full potential to you. Then when you have a price, you could decide whether to hold onto it or sell it at auction.