Latest 50p in the Innovation in Science series celebrates century of ground-breaking Insulin discovery

The UK’s Innovation in Science 50p Series continues as the BRAND NEW 2021 UK Discovery of Insulin 50p has just been released – commemorating 100 years since this groundbreaking finding!

Saving millions of lives around the world and triggering a century of diabetes research, the discovery of Insulin in 1921 by Sir Frederick G Banting, Charles H Best and JJR Macleod was one of the greatest medical breakthroughs in history.

2021 UK Discovery of Insulin 50p

In this special anniversary year, this life-changing hormone features on the UK’s most collected coin for the very first time.

The design, by Iris De La Torre, features an artistic interpretation of the structure of Insulin along with its molecular formula.

Today, you can own the brand new 2021 UK Discovery of Insulin 50p in superior Brilliant Uncirculated quality for JUST £4.50 (+p&p).

What’s more, your coin has been protectively encapsulated in Official Change Checker packaging with that all-important hologram to guarantee its superior quality.

Secure your 2021 UK Discovery of Insulin CERTIFIED BU 50p today by clicking here >>

Whilst this is the first UK coin to celebrate the discovery of Insulin, The Royal Canadian Mint issued a special collector’s set earlier this year to celebrate this historic anniversary…

2021 Canada Discovery of Insulin Collector Card

Whilst 2021 marks 100 years since Sir Frederick G Banting, Charles H Best and JJR Macleod first discovered Insulin at the University of Toronto, it was later purified by James B Collip.

To celebrate this historic anniversary and one of Canada’s most significant contributions to modern medicine, The Royal Canadian Mint have issued a special collector’s set.

Included within this set you’ll find two versions of the 2021 Discovery of Insulin $2, with a design portraying the story from laboratory to the isolation of insulin.

As well as the two Discovery of Insulin $2 coins, the set also includes five other denominations issued in 2021, perfectly displayed within the colourful collector card explaining the importance of this Canadian medical breakthrough that changed the world.

Just 100,000 sets have been issued for collectors worldwide and we’ve managed to secure an initial allocation of just 250 for UK collectors!

With such a significant anniversary and the inclusion of the selectively coloured $2 coin, high demand for this set is expected – so make sure you don’t miss out! You can secure your 2021 Canada Discovery of Insulin Collector Card today for JUST £22.50 (+p&p) here >>

This exciting new 50p is the very latest addition to The Royal Mint’s Innovation in Science series which has proven incredibly popular with collectors…

2021 UK Charles Babbage 50p


Charles Babbage was an English mathematician and inventor who originated the concept of a digital programmable computer.

In 2021, in the year marking the 150th year of his passing, The Royal Mint commemorated him on a UK 50p – an addition in their Innovation in Science series.

This 50p, designed by Nigel Tudman and Jas Bhamra, features a clever design which links Babbage’s extraordinary machinery to the digital age.

You can secure this coin for your collection for JUST £4.50 (+p&p) here >>

2021 John Logie Baird 50p

It’s hard to imagine life without television but back in the early 1920s, it was a complete unknown.

That was until John Logie Baird successfully produced televised objects in outline in 1924transmitted recognisable human faces in 1925, and demonstrated the televising of moving objects in 1926.

Issued in 20201, to celebrate the life and works of the ‘Father of Television’the design of this 50p coin features key milestones from Baird’s life, presented between the lines of transmission radiating from the centre of the coin.

2020 Rosalind Franklin 50p

In the year that would have marked her 100th birthday, The Royal Mint released a 50p celebrating the life and crucial work of Rosalind Franklin, the first female scientist to be commemorated on a UK coin.

David Knapton’s striking design of this coin, features a depiction of Rosalind Franklin’s X-ray, ‘Photograph 51’, which revealed the helical structure of DNA, in her laboratory at King’s College, London.

One of Britain’s greatest scientists, Franklin made a crucial finding to the discovery of the double-helix structure of DNA.

2019 Stephen Hawking 50p

In 2019, less than a year since his death, The Royal Mint released a Stephen Hawking 50p coin, honouring his works as one of the most influential physicists of the modern age.

He became the very first person to be celebrated in The Royal Mint’s Innovators in Science series and only the third person to be commemorated on a coin within a year of their death (the others being Winston Churchill and the Queen Mother!)

The reverse of the coin, designed by Edwina Ellis, features a stylised black hole and the inscription ‘Stephen Hawking’ . It also shows the Bekenstein-Hawking formula, which describes the thermodynamic entropy of a black hole!


The Innovation in Science series has proven incredibly popular with collectors and we’re sure this brand new 2021 UK Discovery of Insulin 50p will be in high demand…


Secure the 2021 UK Discovery of Insulin 50p for your collection for JUST £4.50 (+p&p)

Secure the brand new 2021 UK Discovery of Insulin 50p in superior Brilliant Uncirculated quality for JUST £4.50 (+p&p) by clicking here >>

What’s more, your coin has been protectively encapsulated in Official Change Checker packaging with that all-important hologram to guarantee its superior quality.

Secure your 2021 UK Discovery of Insulin CERTIFIED BU 50p today by clicking here >>

Rarest UK Coins Revealed! 2020 Mintage Figure Update

One of the biggest numismatic updates of the year comes when the latest mintage figures are announced and today we are very excited to share the updated figures for 2020 circulation coins, which have just been revealed by The Royal Mint!

As the UK’s most collected coin, it’s great to hear that three 50p designs were released into circulation last year. These include the Withdrawal from the European Union 50p, the Diversity Built Britain 50p and this year’s Royal Shield 50p.

We’ve updated the Change Checker 50p Mintage Chart with these new additions to show you which 50ps you should be looking out for:

The rarest of the trio to be released is the Withdrawal from the EU 50p, commonly known as the Brexit 50p, with a circulating mintage of 10,001,000. This is closely followed by the Diversity Built Britain 50p with a mintage of 10,300,000.

These numbers are fairly high for commemorative coins, meaning collectors stand a good chance of finding these ones in their change. What’s more, at 46,540,375 coins in circulation, we expect many collectors to be able to find the 2020 definitive Royal Shield design – just make sure you keep checking the dates on the reverse of your 50ps!

Are you lucky enough to have these in your collection? Let us know in the comments below!

2020 Withdrawal from the EU and 2020 Diversity Built Britain 50p coins

The Royal Mint’s Director of UK Currency, Mark Loveridge, said: “As the original maker of UK coins, we are delighted to play our part in celebrating the story of the nation. In 2020 two important new designs were issued on fifty pences, commemorating British diversity and the UK’s withdrawal from the European Union. Coin collecting remains a popular hobby in the UK, and finding a special design in your change adds to the excitement.”

What about the Olympic 50ps?

In 2012, the release of the Olympic 50p series kick started a collecting frenzy across the nation.

It’s estimated that around 75% of these coins have been removed from circulation by collectors which means they are incredibly sought-after, especially considering these 50ps have some of the lowest mintage figures in circulation…

Many of the Olympic 50ps have a mintage less than 2,000,000 with the rarest (the Olympic Football 50p) having a mintage of just 1,125,500. See the full mintage figures for these coins here.

2011 Olympic Football 50p. Mintage: 1,125,500

Taking these rare 50ps into consideration, the 2018 Peter Rabbit and Flopsy Bunny coins would sit in joint sixth position, below the Kew Gardens, Football, Wrestling, Judo and Triathlon 50ps.

£2 Coin Update

As well as updating the 50p mintage figures, The Royal Mint also revealed that no £2 coins were issued into circulation in 2020.

There have been no new £2 coins issued into circulation since 2016, which may in part be due to the introduction of the new 12-sided £1 coin in 2017.

2016 Britannia £2

It was recently confirmed that The Royal Mint has no plans to strike any £2 coins for circulation for the next 10 years, so unfortunately, there may not be any mintage updates for this denomination for a while.

Whilst 88,071,910 1p coins were released in 2020, no 2p coins have entered circulation since 2018, perhaps suggesting it’s time we question what the future has in store for our beloved coppers.


Have you been lucky enough to find any of these coins in your change? It’s always exciting when new mintage figures are revealed and your realise just how rare the change in your pocket really is!

We’ll be updating the Change Checker Scarcity Index this month and it will be exciting to see how these new figures impact the index.


If you’re interested in coin collecting, our Change Checker web app is completely free to use and allows users to:

– Find and identify the coins in their pocket
– Collect and track the coins they have
– Swap their spare coins with other Change Checkers

Change Checker Web App Banner 2 Amends 1024x233 1 1024x233 - Your January 2019 Scarcity Index update!

Sign up today at: www.changechecker.org/app

Computer pioneer, Charles Babbage, celebrated on latest Innovation in Science 50p…

Charles Babbage was an English mathematician and inventor who originated the concept of a digital programmable computer. He is even renowned for being the ‘Father of Computers’!

In the year marking the 150th year of his passing, The Royal Mint has commemorated him on a brand new UK 50p, the latest issue in their Innovation in Science series.

2021 UK Charles Babbage 50p

This brand new 50p, designed by Nigel Tudman and Jas Bhamra, features a clever design which links Babbage’s extraordinary machinery to the digital age.

Believing scientific advancements should benefit everyone, Charles Babbage is the perfect addition to The Royal Mint’s Innovation in Science series.

Excitingly, this brand new 50p is now available in Brilliant Uncirculated quality for JUST £4.50 (+p&p) for collectors. To secure yours today, in Official Change Checker packaging, simply click here >>

The Pioneer of Computing

Charles Babbage (1791-1871). Source: Wikimedia Commons.

Boasting an impressive career in calculus, astronomy, and arithmetics , Charles Babbage held the title of Lucasian Professor of Mathematics at Cambridge University.

The 1820s saw Babbage’s development of his ‘Difference Engine’, which was a machine that could perform mathematical calculations. Initially constructed as a six-wheeled model, it was later developed into a bigger, better, and more complex machine – Difference Engine 2.

However, his fame as a computer pioneer largely came from his invention, the Analytical Engine. It could perform any arithmetical calculation using punched cards, as well as a memory unit to store numbers – the fundamental components of today’s computers.

Babbage’s ideas were well ahead of their time, making him a perfect addition to The Royal Mint’s Innovation in Science series.

The Innovation in Science Series

This exciting series kick-started back in 2019 with the issue of the Stephen Hawking 50p.

2019 Stephen Hawking 50p

In 2019, less than a year since his death, The Royal Mint released a Stephen Hawking 50p coin, honouring his works as one of the most influential physicists of the modern age.

He became the very first person to be celebrated in The Royal Mint’s Innovators in Science series and only the third person to be commemorated on a coin within a year of their death (the others being Winston Churchill and the Queen Mother!)

The reverse of the coin, designed by Edwina Ellis, features a stylised black hole and the inscription ‘Stephen Hawking’ . It also shows the Bekenstein-Hawking formula, which describes the thermodynamic entropy of a black hole!

2020 Rosalind Franklin 50p

In the year that would have marked her 100th birthday, The Royal Mint released a 50p celebrating the life and crucial work of Rosalind Franklin, the first female scientist to be commemorated on a UK coin.

David Knapton’s striking design of this coin, features a depiction of Rosalind Franklin’s X-ray, ‘Photograph 51’, which revealed the helical structure of DNA, in her laboratory at King’s College, London.

One of Britain’s greatest scientists, Franklin made a crucial finding to the discovery of the double-helix structure of DNA.

2021 John Logie Baird 50p

It’s hard to imagine life without television but back in the early 1920s, it was a complete unknown.

That was until John Logie Baird successfully produced televised objects in outline in 1924transmitted recognisable human faces in 1925, and demonstrated the televising of moving objects in 1926.

Issued in 20201, to celebrate the life and works of the ‘Father of Television’, the design of this 50p coin features key milestones from Baird’s life, presented between the lines of transmission radiating from the centre of the coin.


We’re so excited to see the 2021 UK Charles Babbage 50p join the marvelous Innovation in Science series and we’re sure this brand new coin will prove incredibly popular with collectors!

Will you be securing these coins for your collection? Let us know in the comments!


Secure the 2021 UK Charles Babbage 50p in Brilliant Uncirculated quality!

Own the brand new 2021 UK Charles Babbage 50p in CERTIFIED Brilliant Uncirculated quality for JUST £4.50 (+p&p).

Your superior collector quality coin has been protectively encapsulated in Official Change Checker packaging to preserve for generations to come.