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British 2010 20 Pence Struck On 5 Pence Planchet?

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CentR's Avatar
United States
135 Posts
 Posted 03/05/2025  12:35 am Show Profile   Bookmark this topic Add CentR to your friends list Get a Link to this Message Number of Subscribers
Just purchased on ebay. Seller says the coin is non-magnetic and weighs 3.24 grams.
Do you think this is a 2010 20p struck on a 5p planchet?
Has anyone seen other examples?
ChatGPT deepresearch found several examples in other years, but only one possible example of a 2010 on checkyourchange.com.

It was listed as a 20p wrong planchet error, but that listing said further details were needed, and no specifics on which planchet were given.

https://www.checkyourchange.co.uk/p...error-coins/
Ref number 20P028





Coin is in transit from UK, so I only have images from ebay ad.
Edited by CentR
03/05/2025 10:33 am
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NumisRob's Avatar
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16559 Posts
 Posted 03/05/2025  04:01 am  Show Profile   Check NumisRob's eBay Listings Bookmark this reply Add NumisRob to your friends list Get a Link to this Reply
Interesting....

The British 5p coin switched from cupro-nickel to nickel-clad steel from 2011, so a 5p planchet from 2010 should be non-magnetic and weigh 3.25 grams.
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Spence's Avatar
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32913 Posts
 Posted 03/05/2025  06:27 am  Show Profile   Bookmark this reply Add Spence to your friends list Get a Link to this Reply
@cent, here is a reliable and informative website for your coin error information:

https://www.error-ref.com/?s=wrong+planchet
"If you climb a good tree, you get a push."
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