Commemorating 100 years since the discovery of Insulin in 1921 which was considered a medical breakthrough as it could be used to help manage diabetes.
This coin is the fifth 50p coin in the Royal Mint's Innovation of Science series.
 
*This coin has not been released into general circulation*
 
Obverse: Jody Clark Portrait
Reverse: depicting the molecule struture of insulin and it's scientific formula (designed by Iris De La Torre).