Most rare and valuable £20 notes in circulation revealed – from missing Queens to lucky 7s

AVID currency collectors don't just stop at coins, find a rare bank note and you could be in the money too.

There are a number of £20 notes floating about that can score particularly high bids at online auctions, all because of their quirky features or history.

Some are missing key features like the image of Queen Elizabeth II's head which has gone walkabouts in some error designs, meanwhile the gamblers delight in their favourite sight of a row of lucky sevens.

The paper £20 is soon to disappear from cash drawers and ATM's across the UK, so we're sure it won't be long before they become rare in their own right.

Of course, spend them up or cash them into the bank sooner rather than later or you could find yourself short when they do expire - but it could be worth keeping one or two behind in case they do increase in value once they're demonitised.

But whether they're old or new, you should always be wary of fakes that may be doing the rounds too.

You can always head to experts to get your change validated, that way you'll know if it's the real deal, and checking other eBay listings can often give you an idea of the value.

You may be able to hike up the price you sell a copy of your own on for if that's the case.

But the value of various £20 notes can vary from one day to the next.

One collector may be willing to pay hundreds if it's rare, has a history, or any other reason, but the Bank of England may only accept it at face value.

Regardless, we've spotted some top sellers on eBay - here's what they went for, and why they were so rare.

The first issue - worth £204