*** UPDATE ***

With the impact of Covid-19 meaning less people are using cash, it seems older, paper banknotes aren’t being cashed in! According to reports, 24.5 billion paper banknotes are still out there!

Whilst the paper £20 is technically still legal tender, the new polymer notes have been causing quite a stir in the collecting community.

Back in 2016, the first-ever polymer banknote was issued to replace the paper £5 note, with a cleaner, safer and stronger alternative.

Since then, we’ve seen the introduction of the polymer £10, featuring the portrait of Jane Austen and this year saw the issue of the polymer £20 note, featuring JMW Turner’s portrait.

2020 JMW Turner Polymer £20 Note

We’ve seen the £5 and £10 notes prove incredibly popular with collectors, with particular notes selling on eBay for way over face value!

But what makes a banknote collectable? Well… It’s all to do with serial numbers!

We previously listed the serial numbers that you should be looking out for on the Polymer £20 note, from AA01 to AK-47, and unsurprisingly, some are proving more popular than others, but which ones are likely to fetch the most on the secondary market?

Well, we’ve done the hard work for you by taking a look at which polymer £20 note serial numbers are selling for the most on eBay and which ones you should be looking out for.

How much is the polymer £20 worth?

‘Rare’ polymer £20 banknotes

Recurring numbers

If you’ve been lucky enough to find a £20 note with a series of recurring numbers, like the 777777 serial number, you may want to keep hold of it as we’ve seen some which are currently selling on eBay for around £400 – over 20 times its face value!

Serial number 777777. Credit: eBay

Similar serial numbers have sold for prices within the same range. The 333333 serial number also sold for £400, so it seems collectors everywhere are desperate to get their hands on a recurring number note!

Serial number 333333. Credit: eBay

Another type of serial number you should be keeping an eye out for, is a ‘ladder’. These are serial numbers that have consecutive numbers, like this ‘001122’ note.

Serial number 001122. Credit: eBay

One lucky collector got his hands on this note but at a hefty £529…  Other ladder numbers include ‘012345’ and these could currently fetch you a very respectful £350 on the secondary market!

AA numbers

As with previous polymer note issues, the lower serial numbers for the new £20 have proven popular with collectors, with the current average selling price for the AA notes coming in at £40! That’s two times the note’s face value!

Serial number: AA50. Credit: eBay

At the annual Bank of England charity auction held at Spink and Son Ltd in London the very first polymer note, the £5, with the serial number AA01 000017 auctioned for £4,150! However, this year, the £20 note with serial number AA01 000010 sold for a staggering £7,500, over FOUR times its starting price!

Serial number: AA01 000010 auction. Credit: Spink

AK47

Considered collectable due to the machine gun connotations, polymer notes with the prefix AK47 were thought to be worth well over face value following the new £5 release in 2016.

A quick look at the most recent eBay sold prices for this serial number, on the new £20 note, show that people are willing to pay £11 over its face value!

Serial number AK47. Credit: eBay

What about the £50 note?

The Bank of England will be issuing a new polymer £50 in 2021 featuring the scientist Alan Turing.

£50 Polymer Banknote Concept. Credit: Bank of England

We can’t wait to see the new polymer £50 when it’s issued!

So there we have it, the current selling prices for your polymer £20 notes! With less cash being used during the current climate and therefore less notes in circulation, it’s possible this has added to the collectability of these new polymer £20 notes.

Are you a banknote collector and if so, which notes do you have in your collection? Let us know in the comments below!


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

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.

Once again, the Kew Gardens 50p is on the rise, this time increasing in price on the secondary market by a staggering £18! This comes after an increase of £5 on the last eBay Tracker update.

The ongoing popularity of this rare coin is clear to see and appears to be continuing to build following the 2019 re-issue of the coin to celebrate the 50th anniversary of the 50p.

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

2009 Kew Gardens 50p

Other coins to keep an eye on are the Commonwealth Games Northern Ireland £2 which has increased in price by £10 since the last update and the Jemima Puddle-Duck 50p which has increased by £2.

However, the biggest riser on the eBay Tracker is the Olympic Football 50p which has increased by 107% to £15.50 on the secondary market – certainly not a bad return for a 50p coin!

As the rarest Olympic 50p in circulation, with a mintage of just 1,125,500, this coin has been on collector’s radars since the Olympic 50p series sparked a collecting frenzy in 2012.

And with the Tokyo Olympics approaching this year, are we likely to see these coins become even more popular with collectors in 2020?

2011 Olympic Football 50p

Valuation Index

Overall there has been a 4% increase in value for the Top 10 UK coins and banknotes since June’s update and this is mostly due to the impressive spike in price for the Olympic football 50p.

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

We’re excited to present your latest eBay Tracker and Valuation Index for the Top 10 UK coins and banknotes!

The secondary market can be a bit of a minefield, but if you’ve found a rare coin or banknote and want to work out how much it might be worth, we’ve done the hard work for you…

eBay Tracker

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

The most notable increase from the last update goes (unsurprisingly) to the Kew Gardens 50p, which has increased in price on the secondary market by £5 and is currently selling for around £102 on eBay – more than 200 times its face value!

Whilst many collectors were concerned that the 2019 Brilliant Uncirculated re-issue of this 2009 coin would make it less collectable, it seems that in fact the opposite has happened and the reinvigorated hype surrounding the UK’s rarest 50p in circulation has led to an increase in demand for the coin, meaning collectors are willing to pay more to get their hands on one.

2009 Kew Gardens 50p

Other increases to mention are the AA01 serial number polymer banknotes, as both the £5 and £10 notes have increased by £2 since the last update, which is a 20% increase on January’s figures for the £5 and 11% for the £10 note.

Overall there has been a decrease in value for the Top 10 coins and banknotes and this is mostly due to the 2018 Sir Isaac Newton 50p, which has dropped by 32% on January’s figures and is currently selling for £40.50.

This coin was issued as a ‘Strike Your Own Coin’ from The Royal Mint Experience in 2018 and due to the short time frame it was available for, the number of coins struck could be really low, meaning it may well be very rare.

However the mintage figures for this coin haven’t been revealed by The Royal Mint yet, so we don’t know exactly how many were struck. When the official figures are released we could well see this coin increase in value on the secondary market.

Valuation Index

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