Rarest 50p coins in circulation: how much are they worth?

YOUR spare change could actually be worth a small fortune - we reveal the rarest 50p coins in circulation that could make you a mint.

Rare and valuable coins can go for a lot of money if they're in demand by coin collectors willing to cough up a wad of cash to add them to their collection.

In general, the rarer the coin, the more valuable it is.

Change Checker's latest  takes a look at the rarest coins in circulation from the past three months - and shows which coins are in demand.

Some of the hardest to find coins can be worth far more than their face value, so it's worth keeping track of which of the rarest score high bids on sites like eBay too.

We've had a look around online to see how much each of the rarest designs are selling for - but be aware because the rarest coins won't always make you richer.

Now might be a good time to check the change in your purse because you might be the owner of one of the rarest 50p coins without even knowing it.

Kew Gardens, up to £253

The Kew Gardens 50p tops the scarcity index list of the coins currently in circulation - with a mintage (the number of coins issued) of just 210,000, it is the rarest coin and is the most in demand.

This rare commemorative coin was created in 2009 to celebrate the 250th anniversary of London’s Kew Gardens.

One recently sold on eBay for £253 after bidders locked horns in a tussle to bag it.

Triathlon, up to £21