Innovation in Science series continues, as Rosalind Franklin becomes first female scientist celebrated on a UK coin!

In the year that would have marked her 100th birthday, The Royal Mint have released a brand new 50p celebrating the life and crucial work of Rosalind Franklin.

2020 UK Rosalind Franklin 50p

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

This really is a coin full of numismatic firsts, as this is the first time that Franklin’s DNA story has featured on a UK coin, and it is also the very first time a female scientist has featured on a UK coin too!

Developed in collaboration with King’s College, London, this coin is available in Brilliant Uncirculated quality for just £4.50 (+p&p). [link]

The Story Behind The Scientist

One of Britain’s greatest scientists, Franklin made a crucial finding to the discovery of the double-helix structure of DNA, yet her contribution was little known.

Rosalind Franklin with Microscope (1955). Credit: Wikimedia Commons.

Applying X-ray diffraction methods to the study of DNA, enabled Franklin to discover the helical conformation of the molecule, in a photograph called, ‘Photograph 51’. This work laid the foundations for James Watson and Francis Crick to later establish that the structure of DNA was in fact a double-helix polymer (a spiral consisting of two DNA strands).

Tragically, at the age of just 37, Franklin passed away from ovarian cancer, robbing her of the same awards and recognitions that her colleagues were gifted.

To mark what would have been a very special birthday, this brand new 50p restores Franklin’s rightful legacy, and celebrates her significant role in the discovery of DNA, as she becomes The Royal Mint’s second Innovator in Science.

However, this brand new Rosalind Franklin 50p isn’t the only UK coin to celebrate great British scientists… it’s the second release in The Royal Mint’s Innovation in Science series!

2019 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 Innovation 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!

There are a number of other UK 50p and £2 coins of a similar theme which you can look out for in your change…

2003 DNA £2

2003 DNA £2

In 2003, to mark the 50th anniversary of James Watson and Francis Crick‘s discovery of the double-helix structure of DNA, The Royal Mint issued this £2 coin.

As we mentioned above, had Rosalind Franklin not discovered the helical conformation of DNA, Watson and Crick may never have established it’s double-helix structure!

They found a twisted strand of deoxyribonucleic acid, intertwined in such a way that they could pull apart, replicate themselves, and pass their genetic code from old cells to new.

The coin’s design pays tribute to this ‘double-helix’ structure and has a mintage of 4,299,000.

2017 Isaac Newton 50p

2017 Sir Isaac Newton 50p

Sir Isaac Newton is widely recognised as one of the most influential scientists of all time and a key figure in the scientific revolution.

He changed our understanding of mathematics and physics, redefined the way we see the world and shaped the security of our currency in his role as Master of the Mint.

Designed by Aaron West, this 50p coin was issued to commemorate the achievements of Sir Isaac Newton and it remembers the legacy he left.

It has a circulating mintage of just 1,801,500.

2009 Darwin £2

2009 Charles Darwin £2

In 2009, The Royal Mint celebrated 200 years since Charles Darwin’s birth and 150 years since the publication of ‘On the Origin of Species’ by issuing this £2 coin. It has a circulating mintage of 3,903,000.

Darwin has been described as one of the most influential figures in human history and was known as the ‘father of evolution’.

At the time of publication in 1859, his book was extremely controversial as it made it seem possible that humans evolved from apes, which contradicted the widely held Orthodox Church theory of creation!

2001 Wireless Transmission £2

2001 Wireless Transmission £2

In 1901, Guglielmo Marconi, an Italian physicist, succeeded in sending the first radio transmission across the Atlantic Ocean, disproving theories that the curvature of the earth would limit the transmission to 200 miles or less.

The message – simply containing the Morse code signal for the letter ‘s’ – travelled more than 2,000 miles from Poldhu in Cornwall to Newfoundland in Canada and won him worldwide fame and a Nobel Prize in physics in 1909.

In 2001, to celebrate the 100th anniversary of the first wireless transmission, The Royal Mint issued this £2 coin. It entered circulation and has a mintage of 4,558,000.


We’re so excited by this brand new 50p release and we can’t wait to find out who else will feature in the Innovation in Science series!

Who do you think should be chosen to be featured alongside Stephen Hawking and Rosalind Franklin?


Secure the BRAND NEW Rosalind Franklin 50p for just £4.50 (+p&p)

Click here to secure the 2020 Rosalind Franklin 50p in Brilliant Uncirculated quality for just £4.50 (+p&p) >>

Your guide to the Pre-1997 £2 Coins

In 1986, a brand new UK denomination was introduced in the form of a £2 coin.

These original £2 coins were never commonly found in circulation, as they were mainly struck for collectors. This made them much rarer than their successor, the bi-metallic £2 coin, as their mintage figures were much lower.

The pre-1997 £2 coins are still legal tender but they’re not used in circulation and banks/shops can refuse to accept them. Despite this, they still remain incredibly popular amongst collectors!

So, in this blog, we’ve put together a guide to the pre-1997 £2 coins, including everything you need to know about these collectable commemoratives.

What are old specification £2 coins?

The £2 coin has changed in its appearance since it’s first introduction in 1986…

The familiar, fully circulating bi-metallic £2 coin, was only introduced in 1998 and we’ve seen already seen over 50 different designs in total!

But prior to this, single-coloured, nickel-brass £2 coins were issued, purely to mark special occasions.

Between 1986 and 1996, there were seven different designs of the single-coloured £2 coins.

The Pre-1997 UK £2 Coins

Spot the difference…

Pre-1997 (old specification)1997 onwards (new specification)
Weight15.976g12g
Diameter28.4mm28.4mm
MetalNickel-brassOuter Nickel-Brass
Inner Cupro-Nickel
Obverse Effigy1969-1985 – 2nd Portrait, Arnold Machin
1985-1997 – 3rd Portrait, Raphael Maklouf
1997-2015 – 4th Portrait, Ian Rank-Broadley
2015-onwards – 5th Portrait, Jody Clark

As you can see, although the diameter of the £2 coin stayed the same, the weight was significantly heavier in the pre-1997 £2 coins!

The metal composition also changed so that the new bi-metallic coin could be distinguishable from the other coins in circulation.

So, how many of these coins were issued? Let’s take a look at our Pre-1997 £2 Mintage Chart and see..

Pre-1997 £2 Coin Mintage Chart

You might have spotted the top coin in our chart has a mintage of JUST 381,400! Let’s take a look at each of these coins in closer detail to get the full story…

1986 Commonwealth Games

Fact file:

  • Year of issue: 1986
  • Obverse designer: Arnold Machin
  • Reverse designer: Norman Sillman
  • Mintage: 8,212,184
1986 Commonwealth Games £2

The 1986 Commonwealth Games £2 coin changed the face of UK commemorative coins, being the first of its denomination to be struck and the first British coin being issued to commemorate a sporting event.

The thirteenth Commonwealth Games were held in Edinburgh in 1986, and are well remembered for being boycotted by 32 of the 59 eligible countries who did not agree with Britain’s sporting connections to South Africa during the Apartheid era.

The reverse design features a thistle encircled by a laurel wreath over the cross of St Andrew.

1996 Football

Fact file:

  • Year of issue: 1996
  • Obverse designer: Raphael Maklouf
  • Reverse designer: John Mills
  • Mintage: 5,141,350
1996 Football £2

In 1996, England hosted the 10th European football championship and a commemorative £2 coin was struck in celebration of football.

The reverse design resembles a football, and is accentuated by the unusual concave surface of the coin. The year of 1996 is prominent on the design and the sixteen small rings represent the sixteen teams competing in the tournament.

The eventual winners of the competition were Germany who knocked out hosts England in the semi-finals.

1995 Peace

Fact file:

  • Year of issue: 1995
  • Obverse designer: Raphael Maklouf
  • Reverse designer: John Mills
  • Mintage: 4,394,566
1995 Peace £2

This commemorative £2 was issued in 1995 to mark 50 years since the end of World War II.

Victory in Europe Day, or VE Day, is the 8th May 1945 when armed forces formally accepted the surrender of Nazi Germany. Upon the news, jubilant crowds sang and danced in the streets of London, New York, Paris and Moscow.

The reverse design by John Mills features a dove as “a symbol of aspiring peace; a calm, bountiful and optimistic image”.

1989 Bill of Right

Fact file:

  • Year of issue: 1989
  • Obverse designer: Raphael Maklouf
  • Reverse designer: John Lobban
  • Mintage: 4,392,825
1989 Bill of Rights

In 1689, Prince William and Mary accepted the Declaration of Rights prior to being offered the throne. This effectively shifted the balance of power from the Crown to Parliament and changed the course of British political history.

This £2 coin was issued in 1989 to commemorate the 300th anniversary of this landmark Act. There were 2 versions of the coin issued – English and Scottish.

This coin is the English reverse design , which features the Crown of St. Edward and the inscription ‘Tercentenary of the Bill of Rights’

1995 United Nations

Fact file:

  • Year of issue: 1995
  • Obverse designer: Raphael Maklouf
  • Reverse designer: Michael Rizzello
  • Mintage: 1,668,575
1995 United Nations

The United Nations was established in the aftermath of World War II with the aim of maintaining world peace and to work for social progress.

Since its creation in 1945, the UN has sought to resolve potential conflicts peacefully and fight against poverty, hunger and disease across the world.

This commemorative £2 coin issued in 1995 marks 50 years since the inception of the UN, and features flags of nations accompanying the 50th anniversary symbol.

1994 Bank of England

Fact file:

  • Year of issue: 1994
  • Obverse designer: Raphael Maklouf
  • Reverse designer: Leslie Durbin
  • Mintage: 1,668,575
1994 Bank of England

When William and Mary came to the throne, public finances were weak and the system of money and credit were in disarray.

The Bank of England was founded in 1694 to act as the Government’s banker and debt manager, and its position as the centre of the UK’s financial system is maintained to this day.

This commemorative £2 was issued in 1994 to mark its 300th anniversary. The reverse design features the original Corporate Seal of the Bank of England and distinctive Cypher of William and Mary.

1989 Claim of Right

Fact file:

  • Year of issue: 1989
  • Obverse designer: Raphael Maklouf
  • Reverse designer: John Lobban
  • Mintage: 381,400
1989 Claim of Right

This is the second coin to be issued in 1989 to commemorate the 300th anniversary of Prince William and Mary accepting the Declaration of Rights.

This Scottish reverse design features the Crown of Scotland and the inscription ‘Tercentenary of the Claim of Right’.

The mintage for this £2 however, is much lower. With just 381,400 issued, this technically makes it the rarest £2 coin ever! In comparison, the UK’s current rarest circulating £2 coin, the 2002 Commonwealth Games – Ireland, has a mintage of 485,500!


So hopefully our guide to the Pre-1997 £2 coins will help you along the way to expanding your collection!

What’s most exciting about all seven of these coins is that despite still being legal tender, they’re not used in circulation anymore and banks/shops can refuse to accept them. This makes these coins particularly sought-after by collectors!

Do you have any of these coins in your collection already? Let us know in the comments below!


Own the UK’s FIRST-EVER Commemorative £2 Coin!

1986 Commonwealth Games £2

To secure the UK 1986 Commonwealth Games £2 – the UK’s FIRST-EVER Commemorative £2 coin – click here >>

Colouring with Change Checker!

I don’t know about you but here at Change Checker, we’ve been getting creative in our spare time recently.

We’ve loved creating designs and patterns from our coin collections, seeing Change Checkers design their own 50p coins for our Key Worker Heroes and creating their own A-Z 10p designs too!

But our latest creative activity, has involved partnering up with Half Asleep Chris to design the very first Change Checker Colouring Sheets.

Change Checker Colouring Sheets

The Change Checker Colouring Sheets feature some of the most popular coins as a template that you can download, for you to colour in at home!

Once you’ve completed your colouring sheets, send us a photo of them by commenting on this Facebook post, or by emailing [email protected] for the chance to see your design feature in our July Newsletter!

To get involved, just follow these simple steps:

Change-Checker Colouring SheetsDownload

Entries close 24th July. We can’t wait to see how you all colour in your coins!

Happy colouring!


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

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