UK coins
Computer pioneer, Charles Babbage, celebrated on an Innovation in Science 50p…
Charles Babbage was an English mathematician and inventor who originated the concept of a digital programmable computer. He is even considered by some the ‘father of the computer’!
In 2021, the year marking 150 years since his passing, The Royal Mint issued a UK 50p as part of their Innovation in Science series.
2021 UK Charles Babbage 50p
The reverse of the Charles Babbage 50p was created by Nigel Tudman and Jas Bhamra, and features a design honouring Babbage’s legacy, linking his machinery to the digital age. They used a combination of traditional minting skills and modern technology to create the striking design.
The Pioneer of Computing

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 1924, transmitted recognisable human faces in 1925, and demonstrated the televising of moving objects in 1926.
Issued in 2021, 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.
Do you have any of the Innovation in Science coins in your collection? Let us know in the comments!
How much is your A-Z 10p worth now? August 2021 update!
The A-Z of Great Britain 10p coins have been a firm favourite with collectors since they were first released in 2018, with 26 Quintessentially British designs capturing the public’s imagination.
Unsurprisingly, some designs are proving more popular than others, but which ones are likely to fetch the most on the secondary market?
We’ve done the hard work for you by taking a look at which A-Z 10p coins are selling for the most on eBay and which ones you should be looking out for.

The ones to watch…
If you’re lucky enough to have the ‘R’ for Robin 10p in your collection, you might want to keep hold of it, as it currently sells for around £6.99 on the secondary market – which is a pretty hefty return on its face value!
Equally, the B for Bond 10p, which has proven time and time again to be popular with collectors, is currently selling for around £6.25 on the secondary market sites.
These are some really big prices to pay for these A-Z 10p coins and it’s certainly higher than we’d expect to see!
We would always suggest caution and user discretion when buying and selling on eBay. Remember you can always use our 5 eBay Buying Tips which are on our blog, to make sure you get the most out of your money.
Dipping slightly in price, we see the L for Lochness Monster 10p selling for around £4.20 on eBay and the N for NHS fetching a similar price too.
How many A-Z 10p coins are out there?
In 2018, it was confirmed that 220,000 of each design were issued for circulation, but it wasn’t until 2021 that we saw the 2019 mintage figures confirmed.
Collectors who have managed to find the 2019 dated Q, W, Y, Z, and R 10p coins will be delighted to see that these have a lower mintage than the other 21 designs from that year.
The 2019 World Wide Web, Yeoman Warders and Zebra Crossing 10p coins all have a mintage of JUST 63,000! When you compare that to the rarest 50p in circulation, the Kew Gardens 50p, which has a circulating mintage of 210,000, it puts into perspective just how rare these 10p coins are.
Interestingly, the Robin 10p, which currently has the highest median sold price out of all of the A-Z 10p coins, has a combined 2018 and 2019 mintage of just 284,000, compared to 304,000 for the majority of the other coins!
These coins are notoriously tricky to find, but have you been lucky enough to come across any in your change? Let us know in the comments below.
Secure the ultimate commemorative for Change Checkers who are collecting all of the A-Z 10ps
The A-Z of Great Britain Collector’s Medal is the ultimate commemorative for Change Checkers who are collecting all of the A-Z 10ps – a total of 26 designs all issued in 2018!
Your medal will be protectively encapsulated and is the perfect momento for Change Checkers collecting the A-Z of Great Britain 10p coin Series.
The challenge is ON! How many Olympic 50ps can you collect?
After a year long wait the highly anticipated 2020 Tokyo Games have commenced and to celebrate Change Checker has a numismatic challenge for you to take part in!
In 2012, the Olympic Games were hosted in London and to mark the occasion The Royal Mint issued 29 50p coins, each depicting a design of a different sport.
So, we’re challenging Change Checkers to hunt down the Olympic 50ps to see if you can complete a collection of all 29 coins.
It won’t be easy, as it’s estimated that 75% of these coin have been removed from circulation by collectors, but by checking your change and swapping with other collectors, it’s definitely possible to find the complete set.
Sports Edition 50p Collecting Pack
To kickstart your collection, you can now get your hands on the Change Checker Sports 50p Collecting Pack, including space for all 29 coins as you find them in your change!
What’s more, we’ll even include a mystery Olympic 50p to get your collection started and you’ll receive a Change Checker Completer Medal too!
The set comes housed in a Change Checker Album, with pages and a title card telling you all you need to know about these coins.
These really were the 50ps that kick-started the nation’s love of collecting and with such amazing designs, many of which were created by members of the public, you can see why these coins are so well-loved!
They have some of the lowest mintage figures of all the UK 50p coins, with the Football 50p in particular, having a mintage of JUST 1,125,500.
When you consider the popularity and mintage figures of these coins, it really is an exciting challenge to try and collect all 29 designs. What’s more, with the Tokyo Games having just begun, it really is the perfect chance to see how many you can find.
How many will you collect? Best of luck Change Checkers!
Don’t forget to check back in with us to tell us how you’re getting on in the challenge!
Secure your Sports Edition 50p Collecting Pack today!
Kick-start your Olympic 50p collection with the Change Checker Sports 50p Collecting Pack for JUST £19.99 (+p&p).
Your pack includes an official Change Checker Album, ID cards for all of the London 2012 50p coins, pocket pages, and the Sports Edition Title page.
Excitingly, you’ll also receive a mystery London 2012 50p to house in your album PLUS a special Sports Edition Medal.
To take part in the challenge and to secure your Change Checker Sports Edition 50p Collection, simply click here >>