Rare error £2 coin sells for whopping £450 on eBay – is one hiding in your change?

out at £20 but it took just DAYS for keen coin collectors to raise the stakes, and settle on a final call of £450.

On any other day a £2 is worth just that, £2.

But this coin shouldn't look the way it does - instead of sporting a silver middle and golden outer rim, it's gold all over, and certainly unique.

But not unique enough to go undiscovered in other people's change.

A rare copy could just as well be lurking in your pocket - and fishing it out could mean you're quids-in.

Another coin just like it sold for £255 - or 130 times its face value - just months before.

Is one hiding in your change?

Error coins are still legal tender, so while they may look a little odd there's still a high chance they could turn up in your change.

And even the simplest mistakes could be worth a mint - so keep an eye out.

Often, £2 coins will crop up looking a bit like runny fried eggs.

Collectors are super keen to get their hands on the quirky fault and they can pay hundreds of pounds for a copy of their own.

The error is not meant to be there, of course, so that means coins like it won't have been made in mass.

But that's what gets collectors interested - the harder a coin is to find, then the more profit you may stand to make.

Only one rare error Army £2 coin with a misprinted phrase has been spotted for example, yet experts say it could be worth £100.

But experts warn that a number of fake coins often end up in circulation, so you have to be careful when you're bidding online.