But today the second coin has gone on sale on the , although it won't go into general circulation so you won't find it cropping up in your spare change anytime soon.
A brilliant uncirculated version of the new coin can be snapped up for £10, while a silver coloured-in version is available for £65 and a gold Gruffalo coin is priced at £980.
There is once again only a limited run of 25,000 of the coloured version, which shows the monster's iconic orange eyes and thick brown fur looking down on Mouse.
Most valuable 50p coins
THESE are the most valuable 50p coins currently in circulation that have recently sold for the most on eBay:
Kew Gardens, up to £160
This rare commemorative coin was created in 2009 to celebrate the 250th anniversary of London’s Kew Gardens. Only 210,000 of these coins were issued and a quick check online shows up that a circulated coin with this design sold for £160 on eBay.
Ahead of the coin's release in 2011, the Royal Mint redesigned the aquatics 50p to show less water crossing the swimmer making their face more visible. But an unknown small number of coins were accidentally struck with the original design and entered into circulation. One recently after getting five bids.
UK Presidency of the EEC, up to £59
The Royal Mint released a new 50p when the UK joined the European Economic Community (EEC) in 1973 and when the UK held the EU presidency in 1998. One recently after getting 20 bids.
Olympic football offside rule, up to £33
Fifteen bidders battled it out to get their hands on the Olympic football coin on eBay. Released as part of the Olympic collection, the tails side attempts to explain the off-side rule. Eventually, it .
The coins have been released to celebrate the 20th anniversary since The Gruffalo was first published.
Since then, author Julia Donaldson has released 13 books about the creature, sold 14.5million copies worldwide and the tale has been turned into a TV short.
Rachel Hooper of coin collecting website told The Sun the first coin was "incredibly popular" with collectors, and it is thought the new Gruffalo coin could prove just as popular.
Although, she couldn't estimate how much the new coins could be worth.
But The Sun recently found brilliant uncirculated versions of the first coin selling for more than double their price on eBay, with one in a going for £21, while another in a went for £17.50.
You should consider these figures more as a guide to what you can expect to get though as it's not guaranteed.
Colin Bellamy of the added that the coins that don't go into general circulation generate less interest among collectors.