The Royal Mint has revealed the rarest 50p coins in circulation - and some are worth up to £650.
It has listed the official mintage and when the rare 50p designs were made.
There are more than 200 million 50ps circulating in the UK.
The mintage figure is how many of each designed coin was ever made. If the figure is lower it means less of the coin are in circulation, which makes them rare and more valuable.
The coins have many different designs such as Harry Potter and Judo.
The most sought-after coin is the Kew Gardens 50p.
Below we list the Royal Mint's rarest 50p coins and how much they're selling on eBay :
Triathlon - worth £16
- Mintage: 1,163,500
The Triathlon 50p was introduced in 2011 and 1,163,500 in total were made.
The Royal Mint circulated unique 50ps depicting the sport featuring in the upcoming 2012 Olympic Games in London.
One of the highest bids found on eBay for the 50p is £16.
Judo - worth £18
- Mintage: 1,161,500
This coin was also minted in 2011 ahead of the 2012 Olympics.
David Cornell's design won a competition that saw his creation printed on 1,161,500 50ps.
One of the highest bids we've seen on eBay was for £18.
Wrestling - worth £14.50
- Mintage: 1,129,500
This 50p coin was designed by Roderick Enriquez, a graphic designer from Hammersmith, London.
It has been seen on eBay for up to £14.50 online.
Football - worth £20
- Mintage: 1,125,500
This coin is one of the many minted to commemorate the 2012 Olympics, but this one is the rarest.
The 50p Football includes an explanation of the offside rule on it.
In August, one sold for £20.
Kew Gardens - worth £650
- Mintage: 210,000
The Kew Gardens 50p is the rarest of all the 50p coins.
In the past, it has sold for thousands and one listing shows one sold in September for £650.
It has an incredibly low mintage score of 210,000 and was created by Christopher Le Brun RA.
It features the Chinese Pagoda with a leafy chamber that twists around the tower.
