Rare £1 coin minting error could be worth up to £2,500 - here's how to spot it

If you've been collecting the 12-sided £1 coins that were introduced in 2016, it might be worth taking a second look at the ones in your pocket.

Keep an eye out for 12-sided £1 coins from 2016 or 2017, and use a magnifying glass or microscope to examine the coin's edge.

Specifically, look for any irregularities in the micro-lettering around the edge of the coin. If the lettering appears misaligned, unreadable, or distorted, it could indicate the rare minting error.

Most 12-sided £1 coins are standard and worth £1, but misprinted coins could fetch up to £2,500 at auction.

One example of a misprinted coin was sold in Spain for £2,500.

To maximize the coin's value, keep it in good condition and consider getting it professionally authenticated.