The UK 2021 Discovery of Insulin Silver Proof 50p

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Own the UK 2021 Insulin Silver Proof 50p today

It’s been 100 years since the discovery of insulin in 1921, and to celebrate The Royal Mint have released a 50p coin! Joining the likes of Stephen Hawking and Rosalind Franklin as the fifth coin in the Innovation in Science series, this coin is sure to capture the attention of collectors.

Honouring the revolutionary work of Dr John Macleod, Sir Frederick Banting, Dr Charles Best and Dr James Collip, designer Iris De La Torre portrays their discovery of insulin on the coin with a design that includes its molecular formula and structure.

Struck from .925 Silver to a Proof finish

Highlighting this lustrous artwork, The Royal Mint have struck the 50p from .925 Silver to a Proof finish. Proof coins are individually struck with the punch hitting the blank several times to create the perfect, flawless 'Proof' finish, and also create maximum contrast between the frosted design and perfect mirror-like background of the coin. It’s this superior quality that makes Proof coins so sought-after amongst serious collectors.

3500 edition limit

With an edition limit of 3,500, collectors won’t want to miss out on the 100 Years of Insulin 50p. The good news is you can add it to your collection today for The Royal Mint’s official issue price of JUST £57.50 (+p&p).


  • Country of Issue: UK
  • Year of Issue: 2021
  • Coin Diameter: 27.3mm
  • Coin Weight: 8g
  • Obverse: Jody Clark
  • Reverse: Iris De La Torre
  • Metal: .925 Silver
  • Finish: Proof
  • Edition Limit: 3,500
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