Posts Tagged ‘Error’

Is this a new £1 minting ‘error’?!

Last year we reported on the ‘Dual-dated £1 coin error’ where the dates on the obverse and reverse were different, one reading 2016 and the other 2017.

Now another £1 coin ‘error’ has been discovered and this one is very interesting indeed! It would appear that a 12-sided £1 coin die has been struck on an old round £1 coin blank.

Error - Is this a new £1 minting 'error'?!

The latest £1 ‘error’ coin appears to be a 12-sided £1 die struck on an old round £1 coin base. (Image: Zeki Atma)

In the past week alone, we’ve seen 3 examples of this ‘error’ coin.

The first was from a Change Checker from Burnham-on-Sea who told us that they’d listed the coin on eBay. After receiving 22 bids, the coin sold for £205! 

One pound eBay - Is this a new £1 minting 'error'?!

One of the first examples of this ‘error’ coin has sold for £205 on eBay!

Another coin is being sold at an auction in London on Wednesday 21st February. The auctioneers, ‘Timeline’, who are based in Berkeley Square, describe the coin as an “exceptional modern rarity” and go on to say “…the coin is sure to attract much attention when it crosses the block later this year”.

one pound Auction - Is this a new £1 minting 'error'?!

Another example of this latest ‘error’ will be available to purchase at auction on the 21st February. (Image: Coin news)

The third report we have received was this morning from another Change Checker. Our advice to anybody who believes they have found this coin, or any other ‘error’ coins, would be to send the coin off to The Royal Mint Museum who offer a free verification service.

They will send the coin back to you with confirmation of their findings, which can take a few weeks depending on demand for the service. Here is the address:

Dr Kevin Clancy, Director of the Museum, The Royal Mint Museum, Llantrisant, Pontyclun, CF72 8YT

As yet, we have not seen proof that these coins have been verified by The Mint, so whilst they look genuine we will keep an open mind for the time being.

As usual, if you think you have found one of these coins or any other interesting ‘errors’, we’d love to hear from you.

The truly unique ‘Bronze 20p’ error coin


We love to hear when Change Checkers make a great coin discovery. We’re often contacted about mis-strikes which are interesting oddities but what really excites us are ‘error’ coins.

Genuine ‘error’ coins, especially those verified by The Royal Mint, are VERY rare and finding one is a goal for many change collectors.

So imagine our excitement when somebody contacted us after finding one of the rarest ‘error’ coins yet!

The ‘Bronze 20p’

Earlier this year, we were contacted by a collector named David Crosier who informed us he’d found a very rare ‘error’ coin.

A collector for over 50 years, David told us how he’d often look out for mis-strikes and ‘mules’ but there was something special about this particular coin. Initially he presumed the coin was plated but decided to send it to The Royal Mint to be certain.

Bronze 20p Error Coin with 20p and 1p - The truly unique ‘Bronze 20p’ error coin

The ‘Bronze 20p’ flanked by a 20p and 1p coin from the same year

After examination by x-ray fluorescence spectrometry, the coin was confirmed by The Royal Mint as an extremely sought-after minting ‘error’.

Somehow a 1p ‘blank’ found its way into the presses and a 20p was accidentally struck onto it.

Bronze 20p thickness - The truly unique ‘Bronze 20p’ error coin

The ‘Bronze 20p’ is significantly thinner than he standard 20p coin

Errors like this are extremely rare, in fact so rare we’ve never heard of another ‘Bronze 20p’, but The Royal Mint verified the authenticity of the coin with a letter and so here at Change Checker we knew this was an opportunity not to be missed.

Bronze 20p Error Coin The Royal Mint Confirmation Letter - The truly unique ‘Bronze 20p’ error coin

Chris Barker, Assistant Curator for The Royal Mint Museum, confirmed the ‘Bronze 20p’ as a genuine ‘error’ coin

Now the great news… we want to give away the amazing ‘Bronze 20p’ to one lucky Change Checker!

And what’s more, you won’t just win the ‘Bronze 20p’, the coin is set in a specially designed presentation box alongside a Brilliant Uncirculated 1p and a Brilliant Uncirculated 20p coin from the same year, beautifully highlighting the minting error.

Bronze 20p Error Coin Set in Display Case 1 - The truly unique ‘Bronze 20p’ error coin

The ‘Bronze 20p’ is housed in a specially designed presentation box alongside a Brilliant Uncirculated 20p and 1p coin from the same year.

Your chance to win the coin

We’ll be selecting a lucky Change Checker to win this coin.  If you’re already registered then we’ll automatically include you in the draw.

To register your free account, all you need to do is enter your email address and choose a password.


Full Terms and Conditions can be found below.

Good luck!

Terms & Conditions

  1. All registered members of at midnight on 7th December 2017 will be automatically entered into the prize draw. No purchase is necessary to register.
  2. The draw will take place on 11th December 2017 and the winner will be notified on that day by email to their registered email address.
  3. The winner will receive the “Bronze 20p”. There is no cash alternative.
  4. Participants agree to meet reasonable requests to assist publicity.
  5. The prize draw is promoted by The Westminster Collection / Change Checker, trading divisions of 288 Group Ltd.
  6. Employees of 288 Group and their families are not eligible to enter.

June 2017 Video Newsletter

With 4 new coin releases, 1 coin unexpectedly entering circulation and a genuine minting error confirmed, June was a very exciting month. Watch as Yasmin and Luke discuss all the latest change collecting news.

change checker phone camera - June 2017 Video Newsletter

The Phonescope works by clipping onto a mobile device, and magnifying the camera, allowing you to take incredible close-up photos and videos.