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.

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.

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.

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.

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.


  1. michael on December 8, 2017 at 5:43 pm

    Terrific Change Checker`s Award`s, really good idea , very interesting story about bronze 20p too. I have got an unusual £2 coin,commerating Scotland hosting the 1986 Commonwealth game`s . It is the only one I have seen , 1 colour & smaller than modern £2 coin`s. Any Idea as to value please ? Season`s greeting`s , Michael Ashton.

  2. John on December 4, 2017 at 12:04 am

    I would love to win ?

  3. Terri Dustan on December 1, 2017 at 8:44 pm

    I tried entering but the site wouldn’t let me .. gutted

  4. Paul Chapman on November 30, 2017 at 5:42 pm

    I would like to meet this generous guy that’s giving away fantastic coin,and it’s saying something abt this guy..
    Thanks for your kind offer..good luck to the lucky winner of this free giveaway offer


    • David on December 7, 2017 at 9:20 am

      I think he may have received a ‘pretty penny ‘ for this . No one would give it away for free

  5. Mrs J G Roantree on November 30, 2017 at 5:15 pm

    I had one of those. I just assumed it was corroded and had been through a washing machine

  6. Josh Griffiths on November 29, 2017 at 9:24 am

    I have a commonwealth Wales £2 with queens head on the reverse upside down! Have looked everywhere to see if there are others that this has happened to but not managed to find anything about it! I have pictures of the coin if anyone would like to see! Will be sending it to the Royal mint soon! Has anyone else got one?

  7. Philip speers on November 28, 2017 at 8:53 pm

    I have a 2p coin which is only struck on one side.the other side is blank would like some feedback on this.

    • Luke Hearn on November 29, 2017 at 8:24 am

      Hi Phil, if possible could you please send a couple of photos to [email protected] and we’d happily take a look at this for you. Thanks Luke

  8. Maurice on November 28, 2017 at 5:02 pm

    Love to win this 20p coin

  9. Pearl Thomson on November 27, 2017 at 11:34 am

    Let me win please never win anything, and my collection would look better with it in

  10. gloria on November 26, 2017 at 5:32 pm

    I would love this in my collection.

  11. I have 2 can't believe they are that rare? on November 25, 2017 at 7:03 pm

    I have 2 how can they be that rare?

    • Tom Liddle on December 2, 2017 at 11:34 am

      Would you like to swap one sure we could find something to swap with

  12. Sheila Round on November 25, 2017 at 4:04 pm

    Would love to be considered to win. Thankyou

  13. lor255 on November 25, 2017 at 3:18 pm

    Would love to win this just started colleting

  14. Adam on November 24, 2017 at 7:16 am

    I currently have one of these errors and in the past I’ve owned another two. Not a particularly rare coin in my eyes. Still, a good gift for an enthusiast.

  15. H. Robinson on November 23, 2017 at 10:19 pm

    Awesome 🙂 good luck to everyone.

  16. peter mountney on November 23, 2017 at 9:29 pm

    would love this in my collection if i am lucky to be picked .

  17. Mark/jane on November 23, 2017 at 8:55 pm

    Good luck everyone ??

  18. Mark box on November 23, 2017 at 8:50 pm

    Good luck everyone ??

  19. Andy Dentten on November 23, 2017 at 8:04 pm

    Well done guys, I’ve just started collecting and this is a brilliant idea. Keep up the the great work!

  20. Nita Khurana on November 23, 2017 at 6:59 pm

    Winning a unique coin is like a dream come true… Wishing for the lady luck to favour me.. It will be great to be the special one

  21. Pete on November 23, 2017 at 6:22 pm

    Nice prize

  22. Mr S M Barron on November 23, 2017 at 5:48 pm

    What a generous guy to donate this unique coin, and what a great company to put it up for a raffle prize. I’ve collected the circulated 20p coins since day one and this if I was lucky enough to win would be the prize of my collection. Change checker you are truly awesome!

  23. Minpinsue on November 23, 2017 at 5:22 pm

    Who wouldn’t want to win such an amazing coin for free.

  24. Dave parker on November 23, 2017 at 5:17 pm

    I’ve entered quite a few of these but never had any luck perhaps to time

  25. Sharon on November 23, 2017 at 4:43 pm

    Amazing what a “FAB” give away. I know I would love this for my collect. Like I am sure every coin collector would. GOOK LUCK EVERYONE what a great coin to have in a collection. Fingers crossed ??xx

  26. Rose Amuah on November 23, 2017 at 4:08 pm

    Thank you
    It is interesting and exciting that this rare coin is in a on offer for winning. Why don’t you just give it to the person who found it. I think it’s only fair.
    Thank you.

  27. Michael Whitburn on November 23, 2017 at 3:33 pm

    wow this would go great with my ever growing collection from Westminster collection .
    also be the first time i ever won anything worth having.

  28. Peter fairway on November 23, 2017 at 3:28 pm

    Would love to win this very rare coin. It would look great with the rest of my collection. Best of luck to everyone.

  29. Tom Rae on November 23, 2017 at 3:08 pm

    Would love this for my daughter or my grandson who both collect odd coins

  30. Peej on November 23, 2017 at 2:46 pm

    I’ve just had a ‘little jig’?? with sepsis. This coin would be great to pass on to my bairns.

  31. Perry McGowan on November 23, 2017 at 1:48 pm

    Would love to win this coin. What a rarity to own.

    • Tam goldie on November 23, 2017 at 5:48 pm

      I already have one will let westminster tomorrow

  32. Janet Coyle on November 23, 2017 at 1:21 pm

    Need some good luck this year and it would cheer me up no end if I was to win this.

  33. Nadine Smith on November 23, 2017 at 1:03 pm

    would love to win, just love quirks and anomalies x

  34. Mr J. Clark on November 23, 2017 at 12:54 pm

    if i could win this it would break a very long losing streak.

  35. Ricky Wells on November 23, 2017 at 12:33 pm

    In It to win it lol

  36. JACK MCCONAGHIE on November 23, 2017 at 12:27 pm

    It would be a great Christmas box

  37. lisa/mark on November 23, 2017 at 11:41 am

    love to win this for collection

  38. Maureen Mcgeown on November 23, 2017 at 11:41 am

    Like to register.

  39. Nigel Kerr on November 23, 2017 at 11:20 am

    If ur not in u can’t win

  40. Ian Tatlock on November 23, 2017 at 11:19 am

    Have been a collector for around 4 years and have just received my first platinum wedding 50p from a collection of 7. This set will be of great importance to my collection. This rare 20p will be something all collectors will want. Win win please.

  41. Joan on November 23, 2017 at 11:18 am

    Yes I would love to win this coin, I just love coins that or different, I’m always out off pocket, because every time I get one, no matter how skint I am will not spend them. My grandchildren just love looking at all the coins

  42. Sheila Peart on November 23, 2017 at 11:14 am

    Wow fabulous give away , would be wonderful to have this in my coin collection. Finger crossed, good luck all

  43. Pete furesz on November 23, 2017 at 10:38 am

    I’ve only just started collecting coins recently .I decided to do it for my grandchildrens when there older.I would love to win the 20p coin to add to my growing collection. WIN WIN please

  44. A Goodinson on November 23, 2017 at 10:34 am

    Would love to win the set to add to my colection

  45. Ricki james on November 23, 2017 at 10:25 am

    Wood to win for my wife as she very ill with cancer

    • Luke Hearn on November 23, 2017 at 10:59 am

      Hi Ricki, I am sorry to hear that your wife is unwell. The winner will be selected at random so everybody will have an equal chance to win the ‘Bronze 20p’. Luke

  46. Mrs sylvia Mccann on November 23, 2017 at 10:14 am

    Yes please I would love to win this coin been a collector for a long time and would love to have it with my collection