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) >>

Good news Change Checkers – your latest eBay Tracker and Valuation Index is here!

Whilst the secondary market can be a bit of a minefield, we’ve put together an easy way for you to see how much the Top 10 UK coins and banknotes are selling for right now.

eBay Tracker

Find out which coins and notes have been the key movers and shakers in the updated eBay Tracker below.

It seems as though the popularity of the 92/93 EEC 50p has rocketed in the past few months, as it has increased in price on the secondary market by a staggering £34 – that’s a 74% jump!

There’s no denying that the UK’s withdrawal from the European Union on the 31st January 2020 and the incredibly popular 2020 Brexit 50p, have played a massive part in the increase of interest for this coin.

92/93 EEC 50p

It was issued to celebrate the UK’s presidency of the European Council of Ministers and has a mintage lower than the Kew Gardens 50p (just 109,000!)

The Kew Gardens 50p has also seen another rise in price on the secondary market, taking it up to a huge £155.50 – a £35.50 increase since our last update!

2009 Kew Gardens 50p

With less cash being used in the past few months because of the current climate, it’s likely collectors are heading to the secondary market to get hold of certain coins, rather than waiting to find them in their change. This therefore drives the price up, as demand for the coin increases.

Additionally, with more time being spent at home and people seeking new hobbies to keep themselves entertained, new collectors are perhaps becoming more aware of rare and collectable coins that might be worth owning and as a result, are heading to the secondary market to get hold of one.

But will we continue to see the price of this coin rise on the secondary market as we head back to a new kind of ‘normal’? Only time will tell and we’ll have to wait for the next eBay Tracker update to find out!

2015 Britannia £2 and 2018 Isaac Newton 50p

Other coins to keep an eye on are the 2015 Britannia £2, which has increased in price by 14% since our last eBay Tracker update and the 2018 Sir Isaac Newton 50p, which has increased in price by £4.

Valuation Index

Overall there has been an 18% increase in value for the Top 10 UK coins and banknotes since January’s update and this is mostly due to the impressive spike in price for both the 92/93 EEC 50p and the Kew Gardens 50p.

This is the biggest increase we’ve seen since the tracker started and the first time since January 2018!

My coin isn’t on the eBay Tracker

The eBay Tracker follows the movements of the Top 10 UK coins and banknotes, however if your coin doesn’t appear on the tracker you can use our 6 point guide to help determine realistic a value for your coin.

So now that you’re up to date with our latest eBay Tracker, will you be selling any of the coins in your collection or will you continue to save them? Let us know in the comments below.

How does the eBay Tracker work?

The Change Checker eBay Tracker takes the last 9 sold prices achieved on eBay and gives the median price achieved (rounded to the nearest 50p). By taking the median, rather than an average, we avoid skewing created by one or two excessive prices achieved.

Please note that the Change Checker eBay Tracker is only ever designed to be a guide as to prices achieved on eBay. Prices may vary depending on collector demand and the quality of the coin being sold. It does not provide any guarantee as to future values of coins.


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

January 2019 eBay Tracker Update

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