The currency revolution of our purses and wallets is in full swing, after the new £1 coins being introduced back in March following the "indestructible" polymer £5 note released last year.

But what if we were to tell you that those pesky old £2 coins you've been saving in an old baked beans tin could be worth a little more than face value? How about a lot more?

According to money experts at ChangeChecker, one particular £2 coin which circulated in 2002 with a Commonwealth Games Northern Ireland theme is quite rare, and is worth up to £72 on eBay.

Since the release of updated versions of the £1 coin and £5 note, interest has soared in the value of rare coins and bank notes, leading to ChangeChecker creating the Scarecity Index detailing which exact coins hold the most value to collectors – with many of these still being in circulation today.

Four of the most sought after £2 coins are new releases, launched by the Royal Mint in 2015 and 2016.

The First World War Navy £2 (2015), The Great Fire of London £2 (2016) and the Shakespeare Comedy and Tragedy £2 (2016) are all thought to be incredibly rare by collectors.

A ChangeChecker spokesperson said: "Whilst all the mintage information is still not available for these issues, intense swap demand and limited numbers of collectors who list the coins in their collections, suggest they may number among some of the more sought after issues for years to come – surely a reflection of the UK public's ever increasing interest in new coin issues."

Here's a list of the £2 coins, in order of rarity, that you should be checking your purse or wallet for, as you could make a pretty penny. All photos from ChangeChecker.org.

1. Commonwealth Games Northern Ireland

2. Commonwealth Games Wales

3. Commonwealth Games England

4. Commonwealth Games Scotland

5. First World War Centenary (Navy)

6. Great Fire of London

7. Shakespeare Comedies

8. Shakespeare Tragedies

9. London 2012 Handover

10. Olympic Centenary

A version of this story has appeared on our sister title, Mirror Online.