The eBay Tracker gets a shake up! June 2024 update

If you have any of the below coins or banknotes in your collection, read on to find out how much they could be worth in our latest eBay Tracker and Valuation Index update!

Since January 2017, our eBay Tracker has monitored the secondary market prices of 10 of the top UK coins and banknotes. However, due to demand for rare and sought after coins changing over the years, and the introduction of the new King Charles III banknotes, we’ve updated the coins and banknotes on our tracker to give you the most relevant data on the top UK coins and banknotes right now.

You might notice that your favourite coin or banknote that we usually track is missing, but you can always check out our previous eBay Tracker updates to see how their value has changed over time. 


eBay Tracker

Of course, we’ll still be tracking the secondary market selling price of the rarest 50p and £2 in circulation – the 2009 Kew Gardens 50p and the 2002 Northern Ireland Commonwealth Games £2, as their extremely low mintage figures make them some of the hardest coins to find in your change.

We’ll also keep monitoring the undated 20p, the 92/93 EEC 50p, the 2018 Sir Isaac Newton 50p and the rarest Olympic coin – the Football 50p.

Kew Gardens 50p

In 2014, 5 years after its release, The Royal Mint revealed that only 210,000 Kew Gardens 50p coins had been struck for circulation, making it the scarcest UK coin in circulation. And 10 years later, people are still willing to pay hefty sums to get their hands on one, in fact it’s the only coin on our tracker to have increased in price in the last 6 months.

The average secondary market value for a Kew Gardens 50p is currently around £145, which is just £7 more than our last update.

2009 Kew Gardens 50p
2009 Kew Gardens 50p

Undated 20p

The undated 20p is often thought of as the ‘holy grail of change collecting’, as it’s not been confirmed just how many of these error coins made it into circulation. As one of the most sought-after coins, it’s at the top of many collectors’ wish lists, and some are willing to pay up to £50 to get their hands on one!

Although that’s 22% decrease since our last eBay Tracker update, it’s still a whopping 250 times the coin’s face value!

Undated 20p
Undated 20p

Her Majesty Queen Elizabeth II 50p

The very first UK coin to feature King Charles III on the obverse after the passing of Queen Elizabeth II in September 2022 paid tribute to Her Majesty’s life and record breaking reign. As only the second ever royal UK 50p AND the first UK coin to feature the new monarch, collectors were keen to get their hands on the 2022 Her Majesty Queen Elizabeth II 50p.

Those who weren’t able to find one in their change straight away took to the secondary market and, back in January 2023 when it first appeared on our eBay Tracker, were willing to pay up to five times its face value! Since then, however, the median secondary market selling price has slowly decreased, as more and more are being found ‘in the wild’ and since The Royal Mint announced that there are 9.6 million of them in circulation – more than the amount of definitive Royal Shield 50ps that entered circulation the same year.


New additions to the eBay Tracker

As of June 2024, we’ll start tracking the median secondary market selling price of some other rare coins in circulation as well as some newer coins and banknotes that are proving hard for collectors to find.

Salmon 50p

The first coin to enter circulation from the New UK Coinage set featuring King Charles III was the Atlantic Salmon 50p. In November 2023, an estimated 500,000 Salmon 50ps entered circulation, but The Royal Mint are yet to announce the definitive mintage figure.

Collectors haven’t been having much luck finding them in their change and due to this, they’ve been selling for a pretty penny on the secondary market, fetching up to £14.50!

Have you found an Atlantic Salmon 50p in your change? Let us know where you found one!

W (World Wide Web) 10p

The A-Z of Great Britain 10p series was first issued in 2018, with a 10p representing something quintessentially British for each letter of the alphabet. A second wave of these 10ps was issued in 2019, and out of all of them, the 2019 W for World Wide Web 10p has the lowest mintage figure of just 63,000 – even lower than the Kew Gardens 50p!

According to our eBay Tracker, you can expect to pay up to £4.50 for a W 10p on the secondary market, not a bad return on a 10p coin!

The first ever King Charles III Banknotes

The first ever King Charles III banknotes entered circulation on 5th June 2024, however they were only available at a select few locations. As these new notes will only be issued to replace worn or damaged Queen Elizabeth II going forward, they’ve inevitably become extremely sought after by collectors.

A King Charles III £5 banknote will cost you up to £25 on the secondary market, whilst a £10 note featuring His Majesty will set you back £21.

The first King Charles III Banknotes entered circulation on 5th June 2024

Valuation Index

Using the total price of the coins and banknotes tracked, the Valuation Index follows the rise and fall of their overall value, measured in points against the baseline set at January 2017.

Change Checker Valuation Index

Since the last update in January 2024, there’s been a 5% decrease in the overall value of the Top 12 coins and banknotes on the eBay Tracker, but bear in mind that the coins and banknotes tracked have been updated, as represented by the vertical dotted line on the graph.


eBay Tracker FAQs

How does the eBay Tracker work?

The Change Checker eBay Tracker takes the last 9 sold prices on eBay and gives the median price achieved. By taking the median, rather than an average, we avoid skewing figures with excessively high or low prices.

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.

My coin isn’t on the eBay Tracker

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


Find out more about your coins

If you’re interested in coin collecting, our Change Checker web app is completely free to use!

Sign up to the Change Checker App now >>

First King Charles III Banknotes ENTER CIRCULATION!

The first banknotes featuring King Charles III entered circulation on 5th June 2024, here’s everything you need to know.

King Charles III Banknotes
Credit: Bank of England

Hot off the press

In November 2023, The Bank of England started printing new banknotes featuring King Charles III at a rate of 6 million in 24 hours. The delay in them entering circulation was apparently caused by machines such as self service tills not being able to recognise the new image and needing to be recalibrated.

King Charles III banknotes in production
Credit: Bank of England Flickr
King Charles III banknotes in production
Credit: Bank of England Flickr

The Bank of England’s chief cashier, Sarah John, said “There is a lot to do to ensure that machines used up and down the country can accept the banknotes. They all need to be adapted to recognise the new design, with software updates, and that takes months and months. Otherwise, we will be putting a banknote out there that people simply would not be able to use.”


A sustainable transition

Taking guidance from the Royal Household, the new banknotes will only be issued to replace worn or damaged Queen Elizabeth II notes, meaning both monarchs’ portraits will co-circulate for the foreseeable future.

There are approximately 4.7 billion Queen Elizabeth II banknotes currently in circulation, worth an estimated £82 billion, so don’t worry – they’ll still be accepted in shops as well as the new King Charles III notes.

This transition phase will minimise the environmental and financial impact of the change, in keeping with the King’s vision for a more sustainable future.

King Charles III’s portrait will now appear on the front of the notes, an image based on an engraving of a picture of His Majesty taken in 2013, however there will be no changes to the current reverse designs:

  • Winston Churchill (£5)
  • Jane Austen (£10)
  • JMW Turner (£20)
  • Alan Turing (£50)
King Charles III £5, £10, £20 and £50 banknotes
King Charles III £5, £10, £20 and £50 banknotes
Credit: Bank of England

Security Features

All denominations of the new banknotes share some of the same security features which you can use to verify the authenticity of the note.

Monarch’s portrait in a see-through window
A portrait of King Charles III is printed on the window with the denomination and ‘Bank of England’ printed twice around the edge.

Hologram Image Change
When tilting the note from side to side, the word within the hologram should change between the value of the note, ‘Five’, ‘Ten’, ‘Twenty’ or ‘Fifty’ and ‘Pounds’.

Silver foil patch
A silver foil patch contains a 3D image of the coronation crown.

Print Quality
The printed lines and colours on the note are sharp and clear, with no smudges or blurred edges. If you use a magnifying glass, you should be able to see the value of the note written in small letters and numbers below the monarch’s portrait.

Feel of polymer and raised print
The note is printed on polymer, a thin and flexible plastic. On the front of the note, you can feel the raised print on the words ‘Bank of England’ and in the bottom right corner.

Ultraviolet number
Under a UV light, the denomination number appears in bright green and red on the front of the note.

£5 features

Here are some security features specific to the £5 notes.

King Charles III £5 Note with security features
King Charles III £5 Note with security features

Colour changing border
When the note is tilted, a coloured border around the edge of the see-through window and the ‘£’ symbol inside the window will change from purple to green.

Green foil patch
On the other side of the silver foil patch showing the coronation crown, the £5 has a green foil patch featuring the word ‘BLENHEIM’.

£10 features

Here are some security features specific to the £10 notes.

King Charles III £10 Note with security features
King Charles III £10 Note with security features

Colour changing quill
When the £10 note is tilted, a coloured quill at the side of the see-through window will change from purple to orange.

Copper foil patch
On the other side of the silver foil patch showing the coronation crown, the £10 has a copper foil patch containing the letters ‘JA’ within an open book, representing Jane Austen.

£20 features

Here are some security features specific to the £20 notes.

King Charles III £20 Note with security features
King Charles III £20 Note with security features

A second see-through window
In the bottom right corner of the front of the £20 note, there is a second, smaller see-through window containing the number 20.

Purple foil patch
On the other side of the silver foil patch showing the coronation crown, the £20 has a purple foil patch containing the letter ‘T’ for JMW Turner.

£50 features

Here are some security features specific to the £50 notes.

King Charles III £50 Note with security features
King Charles III £50 Note with security features

A second see-through window
In the bottom right corner of the front of the £50 note, there is a second, smaller see-through window containing the number 50.

Hologram change
The £50 note has two gold foil squares on the front, and the images within should change between ‘50’ and the ‘£’ symbol when the note is tilted.

Red foil patch
On the other side of the silver foil patch showing the coronation crown, the £50 has a red foil patch containing the letters ‘AT’, paying tribute to Alan Turing who features on the note.

Rare serial numbers

Whenever new banknotes are issued, it causes quite a stir in the collecting community, with serious collectors rushing to secure the notes with the lowest serial numbers.

The Bank of England generally hold back some of the notes with the earliest serial numbers, donating them to people or institutions that were involved in the development of the note, but others can fetch hefty sums at auction!

For example, serial numbers such as AK47 due to the machine gun connotations, and 007 which could be desirable to James Bond fans are considered collectable, as well as serial numbers representing key dates relating to the figure on the reverse of the note.

On 11th July 2024, a King Charles III £20 note with the serial number EH 01 000002 sold for £7,000 at auction – that’s 350 times its face value!

Find out more about which serial numbers to look out for here >>


A closer look


Where can I find a King Charles III banknote?

Eventually, we’ll start to see King Charles III banknotes crop up in our cash, but as their introduction will be a gradual process, some collectors may not want to wait to get their hands on one.

Check out our list of the first locations to stock the new banknotes >>

King Charles III notes
King Charles III notes
Credit: Bank of England

Have you found one in circulation already? Let us know where in the comments!


Safely store your new banknotes

With the release of these new banknotes, now’s the perfect time to start your banknote collection, by owning the Change Checker Polymer Banknote Collecting Pack – with space to securely house all four of England’s polymer banknotes!

Secure yours for just £9.99 (+p&p) >>

Everything you need to know about Polymer Banknote Serial Numbers

The new King Charles III banknotes entered circulation on 5th June 2024, and whilst the reverse designs remain unchanged, this is the first time we’ve ever seen a King feature on UK banknotes – as they were introduced well into Queen Elizabeth II’s reign.

King Charles III £10 banknotes
The new King Charles III banknotes will enter circulation on 5th June 2024
Image credit: Bank of England

It’s not that long ago, however since we last saw a major change in our banknotes, with the introduction of the first polymer banknotes in 2016. The polymer notes were issued to replace paper banknotes with a cleaner, safer and stronger alternative, and by 2022, all banknote denominations had been replaced with a new polymer version and the older paper notes were withdrawn from circulation.

£5, £10, £20 and £50 Polymer Banknotes
£5, £10, £20 and £50 Polymer Banknotes
Image Credit: Bank of England

The new polymer notes caused quite a stir, with collectors rushing to secure the notes with the lowest serial number. But what happened to the very first notes of each denomination?

£5 Polymer Banknotes

Whilst collectors were on the hunt for polymer £5 banknotes with low serial numbers when they first entered circulation in 2016, the very first ones never actually made it into circulation.

The Bank of England always hold back some of the notes with the earliest serial numbers, donating them to people or institutions that were involved in the development of the note, or who traditionally receive a note when a new series is issued.

Serial number Recipient 
AA01 000001 – Her Majesty The Queen 
AA01 000002 – Prince Phillip 
AA01 000003 – Prime Minister 
AA01 000004 – Chancellor of the Exchequer 
AA01 000005 – The Governor (for the Bank) 
AA01 000006 – Deputy Governor (responsible for Notes) 
AA01 000007 – The Chief Cashier 
AA01 000008 – Bank of England Museum 
AA01 000009 – British Museum 
AA01 000010 – Churchill family 
AA01 000011 – Permanent Secretary of the Treasury 
AA01 000012 – Chair of the Bank’s Court 
AA01 000013 – Chris Salmon (former Chief Cashier) 
AA01 000014 – De La Rue 
AA01 000015 – Innovia 
AA01 000016 – Royal Mint 
AA01 001704 – Blenheim Palace 
AA01 001874 – Lord King (former Governor) 
AA01 001910 – The Home Secretary 
AA01 001924 – The Chair of the Treasury Select Committee 
AA01 001929 – George Osborne (former Chancellor of the Exchequer) 
AA01 001940 – The Governor 
AA01 001941 – The US Ambassador to the UK 
AA01 001942 – The Foreign Secretary 
AA01 001945 – Churchill War Rooms 
AA01 001951 – David Cameron (former Prime Minister) 
AA01 001960 – Churchill Archive, Churchill College Cambridge 
AA01 001965 – Chartwell 
AA01 002016 – Andrew Bailey (former Chief Cashier) 

Polymer £5 banknote
Image Credit: Bank of England

The Bank of England also conducted an auction of low serial numbered £5 notes on 3 October 2016, which raised £194,500 to be split between three charities – The Myotubular Trust, The Lily Foundation and Bliss. 

The lowest polymer £5 note with the serial number AA01 000017 sold for £4,150!

It’s also worth looking out for banknotes with serial numbers that could be considered collectable, such as AK47 due to the machine gun connotations, and 007 which could be desirable to James Bond fans.

£10 Polymer Banknotes

The UK’s first polymer £10 note, featuring Jane Austen on the reverse, entered circulation on 14th September 2017, and, similarly to the £5 note, the first ones printed were donated.

In October 2017 some of the first Jane Austen Polymer £10 notes were auctioned and raised a staggering £260,900 for charities Candelighters, Haven House Children’s Hospice and Macmillan Cancer support.

The £10 note with the lowest serial number AA01 000010 sold for an incredible £7,200.

The polymer £10 note with the serial number AA01 000010 sold for a staggering £7,200

Other notes that fetched hefty sums were AA01 000011 and AA01 000014, selling for £5,200 and £3,500 respectively.

£20 Polymer Banknotes

Issued in 2020, the £20 was the third polymer banknote denomination to enter circulation.

Did you know? The letters at the beginning of a banknote’s serial number indicate its position on the sheet on which it’s printed. The 6 numbers that follow the letters refer to the number on the sheet the note is printed on.

With the £20 note being larger than the £5 and £10 notes, less notes were printed per sheet, however there were still an incredible 59,940,000 notes with an serial number starting AA!

Polymer £20 Banknote sheet
Polymer £20 Banknote sheet
Image Credit: Bank of England

As the polymer £20 note featured JMW Turner on the reverse, some serial numbers matching key dates relating to the painter the became highly collectible.

For example, 23 041775 represents Turner’s date of birth, whilst 19 121851 relates to his death and 17 751851 would be his birth and death combined.

True Turner fans might also look for 18 381839 representing the date he painted ‘The Fighting Temeraire’ (which featured on the new £20 note) and the date the painting was exhibited at the Royal Academy respectively.

£50 Polymer Banknotes

On the day that would have been Alan Turing’s 109th birthday (23rd June 2021), The Bank of England issued their final banknote in the polymer series, celebrating the famous scientist and mathematician.

The Polymer £50 note features famous scientist and mathematician, Alan Turing
Image Credit: Bank of England

As is tradition, Queen Elizabeth II received the very first polymer £50 note printed with the serial number AA01 000001, however AA01 000010 was donated to the Turing family in honour of Alan Turing featuring on the reverse of the £50 note.

Again, certain serial numbers matching key dates relating to Alan Turing became collectable, such as 23 061912 which represents Turing’s date of birth, 07 061954 which relates to his death and 09 071941 which represents the date that the enigma code was cracked by Turing and his team at Bletchley Park during WW2.

Safely store your banknote collection

With the release of these new banknotes, now’s the perfect time to start your banknote collection, by owning the Change Checker Polymer Banknote Collecting Pack – with space to securely house all four of England’s polymer banknotes!

Secure yours for just £9.99 (+p&p) >>