How much are your RARE coins and banknotes worth? Your August 2025 eBay Tracker update!

Do you have a rare coin or banknote in your collection and often wonder ‘how much could it be worth?’ Whilst there’s no definitive answer when valuing coins, you can take a look on the secondary market to get a ballpark figure.

In our latest eBay Tracker Update, we’ve done the hard work for you to work out how much the top 10 UK coins and banknotes are selling for right now…

In June 2024, we made some changes to the coins and banknotes we track, to make sure we’re looking at the most sought-after ones right now. You might notice that your favourite coin or banknote that we’ve tracked in the past is missing, but you can always check out our previous eBay Tracker updates to see how their value has changed over time. 

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eBay Tracker

** UPDATE 22/09/25 **

It’s now been announced that a further 8.84 million 2025 Bee £1 coins are being released into circulation, meaning it’ll actually have a circulating mintage of 9,010,000. This eBay Tracker was published before the announcement and therefore refers to the 2025 Bee £1 as the rarest £1 in circulation.

2025 Bee £1

Following the announcement in August 2025 that the 2025 dated Bee £1 coin had an initial circulating mintage of just 170,000 – we temporarily added it to our eBay Tracker. Since then, it’s been announced that 8.84 million more 2025 Bee £1 coins have entered circulation, giving more collectors the chance to find one!

The median selling price for 2025 Bee £1 coins sold after the announcement on 20th August 2025 was £12.90, a 30% increase from those sold before the news.

Do you have a 2025 Bee £1 in your collection? Maybe you’re one of the lucky ones to have found it in circulation, or perhaps you have the 2025 Definitive Set which includes the 21025 Bee £1 in Brilliant Uncirculated quality – let us know in the comments!

2023 Salmon 50p

It’s been almost a year since we heard that we have a new rarest UK 50p in circulation – the 2023 Salmon 50p! In October 2024, it was announced that the 2023 Salmon 50p had a mintage of just 200,000, 10,000 less than the previous rarest 50p – the 2009 Kew Gardens 50p.

Despite the 2023 Salmon 50p now being the rarest UK 50p in circulation, it appears that some of the excitement around it has faded since our last eBay Tracker update, as the median selling price has fallen by 23%.

Kew Gardens 50p

Now the second rarest UK 50p in circulation, a 2009 Kew Gardens 50p can set you back around £120 on the secondary market, which is a 16% decrease since our last update – but still a great return on a 50p coin!

Undated 20p

When it comes to coins that many collectors dream to find in their change, the Undated 20p is right at the top of the list. With no official mintage figure and the mystery of just how many slipped into circulation, this little error coin has become legendary!

In this eBay Tracker, the median selling price sits at £44, which is actually £19.95 lower than our last update. So, if you’ve been holding out to secure one for your collection, now might be the perfect time to swoop in and secure one before prices creep back up.

2002 N Ireland Commonwealth Games £2

Just like the Kew Gardens 50p, the rarest £2 coin in circulation – the 2002 Commonwealth Games Northern Ireland £2 – is one of the hardest coins to find in the wild, but often gets overlooked. With a circulating mintage of just 485,500, it’s one of the rarest coins out there, but having been in circulation for over 23 years, a large percentage of them have most likely been snapped up by collectors already.

Those that are willing to part with theirs are asking for around £34 on the secondary market, which is a £2.41 increase since our last update.

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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 in January 2017.

Since the last update in December 2024, there’s been a 13% overall decrease in the value of the Top 11 coins and banknotes on the eBay Tracker. With secondary market prices falling, now might be the time to pick up one of these coveted coins or banknotes for your collection!

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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.

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Find out more about your coins

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