The ultra rare Kew Gardens 50 pence piece regularly achieves prices between £70 and £110, with collectors confident that the cost will rise over the coming months.
Only 210,000 coins were produced by The Royal Mint, compared with the 22.7million featuring the Royal Arms in 2008 and 7.5million with a Girl Guiding design in 2010.
There are a number of rare 50 pence piece's
The next four scarcest 50 pence pieces are the football, triathlon, judo and wrestling coins from the 2012 London Olympic Games.
They will earn the lucky recipient between £8 and £15 on eBay.
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The rarest 50 pence piece is the original 2012 Olympics aquatic coin, which shows water passing directly over the swimmer’s face.
Only 600 coins were created before the design changed slightly to show a swimmer’s face – meaning an original version of the coin could earn you up to £3,000 on eBay.
The Royal Mint
One of the rarest 50 pence piece coins is the Kew Gardens version
The special edition WWF design was released in 2011, which features the famous panda logo at the centre and is decorated with 50 other animals, including dolphins, frogs and butterflies is also amongst the rare collection.
The coin is a popular choice for collectors and commonly sells for more than £90.
One coin which has seemed to unite favourable public opinion is the WWF 50p issued in 2011
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Change Checker said: “One coin which has seemed to unite favourable public opinion is the WWF 50p issued in 2011. The design by Matthew Dent features 50 individual icons which represent the various facets of the WWF with the famous Panda at the heart of it.”
In general, the rarer the coin the more valuable it is, and experts at Changechecker.org has created a scarcity index that tracks which circulating 50 pence piece coins are the most scarce and collectable.
Four new Beatrix Potter 50 pence piece coins have caused a collecting storm across the UK with as many as 50,000 people scrambling to reserve one on The Royal Mint’s website.
The new limited edition Beatrix Potter commemorative coins feature Peter Rabbit, Jeremy Fisher, Tom Kitten and Benjamin Bunny.
The Royal Mint
This is the reguar aquatic coin but there was one that had the face covered
The scarcity index believes these coins will sell for roughly ten to 12 times their face value.
As well as special uncirculated silver coins, there will also be a limited run of full-colour designs.
The new Beatrix Potter coins have already had 50,000 people requesting them
Results suggest that Jemima Puddle-Duck is currently the sixth most difficult coin to find in your change, with Squirrel Nutkin coming in close behind.
The Royal Mint are currently selling the first coin in the 2017 Beatrix Potter collection for £10.
The website said: “The coin has been finished to Brilliant Uncirculated standard – a finer finish than those you’ll find in circulation.”