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Questions On The Undated 20-P

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uouo77's Avatar
United States
125 Posts
 Posted 08/20/2009  09:10 am Show Profile   Bookmark this topic Add uouo77 to your friends list Get a Link to this Message Number of Subscribers
I'm a bit confused on the undated 20p coin. I see ebay listings calling it an undated "2008" 20p, and others calling it an "2009".

So the question is, what year was the error made? or did it happen 2 years?

I've also noticed that there sure seem to be a lot of them for sale. I'm thinking it is going to turn out that it's not all that rare in the end.

Does anyone know what the estimated quantity released is?
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kena's Avatar
United Kingdom
1682 Posts
 Posted 08/20/2009  11:17 am  Show Profile   Bookmark this reply Add kena to your friends list Get a Link to this Reply
So far the error is believed to have taken place only in 2008 since The Royal Mint make both the new style and old style of the 20 pence coins. On the new style, the date is on the front. On the old style, the date is on the back. So basically what happened is somewhere along the line the old style front die was used with the new style back die to create an undated coin.

No one knows for sure how many were made and the error was first reported back in Dec of 2008.

Some of the ones being sold on good old ebay are not errors since people have reported getting one that did have a date on one side. Clever wording on the ebay ad said that it was either undated on the front or back rather than front AND back.

Here is what one UK dealer says about the coin: http://24carat.co.uk/twentypenceund...ladvice.html

Hope this helps.
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Sap's Avatar
Australia
16806 Posts
 Posted 08/20/2009  11:51 am  Show Profile   Bookmark this reply Add Sap to your friends list Get a Link to this Reply
The errors were first spotted late in 2008, so they must have been made that year. The media only began whipping up a frenzy in mid-2009, so many folks probably assume they were only just discovered then.

Of course, they are dateless. If the mint did make more, we'd probably never know for sure, unless they accidentally got bundled into mint sets or something.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis
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alganbagerap's Avatar
United Kingdom
2490 Posts
 Posted 08/20/2009  1:07 pm  Show Profile   Bookmark this reply Add alganbagerap to your friends list Get a Link to this Reply
Before the press began whipping up a frenzy over these coins, they were listed as £30.00
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uouo77's Avatar
United States
125 Posts
 Posted 08/20/2009  2:04 pm  Show Profile   Bookmark this reply Add uouo77 to your friends list Get a Link to this Reply
Well, this tells me a lot. Thanks for the input!

Kena, The web site is detailed in everything I want to know.

I do want one for my type collection and was setting my price at £35.00. Looks like I was about right, however, I see the ebay ones are going for £50.00 to £60.00. Soooooooooo looks like I wait longer. :)
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kena's Avatar
United Kingdom
1682 Posts
 Posted 08/24/2009  02:24 am  Show Profile   Bookmark this reply Add kena to your friends list Get a Link to this Reply
More information about the undated 20 pence from The Royal Mint web site.

http://www.royalmint.com/Corporate/...20pcoin.aspx

In November 2008 a number of 20p coins were incorrectly minted resulting in their having no date.

This problem affected less than 250,000 coins of the 136 million 20p pieces minted in 2008-09.
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augsburger's Avatar
Germany
1062 Posts
 Posted 09/09/2009  11:50 am  Show Profile   Bookmark this reply Add augsburger to your friends list Get a Link to this Reply
I don't have one of these, but I do have a 20p, one of the new ones, which has one side smeared with what looks like copper, and it appears to be a part of the coin. Not sure if this happened whilst being made, but it seems to have been, as if they had used the machine to make a copper coin, then made the 20p straight after.
Might try and get photos, but I have no idea where the darn cable is for the camera.
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uouo77's Avatar
United States
125 Posts
 Posted 09/10/2009  11:59 am  Show Profile   Bookmark this reply Add uouo77 to your friends list Get a Link to this Reply
Hope you find your cable, I would really like to see that coin.
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augsburger's Avatar
Germany
1062 Posts
 Posted 09/10/2009  3:39 pm  Show Profile   Bookmark this reply Add augsburger to your friends list Get a Link to this Reply
Okay, here is the photo, I'm not expert in camera handling, but you can see the difference in colour, a little more pronounced in real life, and it is only on this side. It's basically the streaks, on the lower part there is much more and much less on as it goes up the coin!

Questions-On-The-Undated-20-P
Edited by augsburger
09/10/2009 3:45 pm
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uouo77's Avatar
United States
125 Posts
 Posted 09/11/2009  08:16 am  Show Profile   Bookmark this reply Add uouo77 to your friends list Get a Link to this Reply
That is very interesting, hope somebody can come up with an explanation as to how it happened.
New Member
Australia
6 Posts
 Posted 11/28/2025  8:11 pm  Show Profile   Bookmark this reply Add Chrisw2 to your friends list Get a Link to this Reply
Hi, this happened because the mint changed the design of the 20p in 2008 and mixed the old die head side with the new die tail side and neither die had the date on.
These are rare but not just because the mint are only guessing that 200,000 got through in 2008 before they noticed the stuff up but they are rare because this is the ONE & ONLY TIME EVER, that this has ever happened in the history of The Royal Mint.
I have one myself which is UNC quality and as a collector this is the sort of thing you want in a collection, worth about £100-£150 in this condition.
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jbuck's Avatar
United States
187702 Posts
 Posted 11/30/2025  3:07 pm  Show Profile   Bookmark this reply Add jbuck to your friends list Get a Link to this Reply
Thank you for the information. Better late than never!
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United Kingdom
1313 Posts
 Posted 12/02/2025  3:05 pm  Show Profile   Bookmark this reply Add andyg to your friends list Get a Link to this Reply
It's not the only time this has happened, just one of many.
See this thread for a much rarer example,
https://goccf.com/t/448603
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Sap's Avatar
Australia
16806 Posts
 Posted 12/02/2025  5:20 pm  Show Profile   Bookmark this reply Add Sap to your friends list Get a Link to this Reply

Quote:
this is the ONE & ONLY TIME EVER, that this has ever happened in the history of The Royal Mint.

It isn't even "the only time" in modern times, either, in terms of undated mules. Perhaps the most famous Royal Mint mule is the {1967} New Zealand 2 cents / Bahama Islands 5 cents mule, where the obverse of the Bahamas coin was used to strike a batch of some 50,000 New Zealand 2 cent coins. Since the dates for New Zealand coins are on the obverses and for Bahamas coins it's the reverse, the coins are, like the more recent 20p coin, "undated". Numista example.

They were struck on normal NZ 2 cent blanks and turned up in circulation in New Zealand in 1967, so it's pretty much locked in that that's when they were made, and that's also why the coins are always catalogued under "New Zealand" rather than "Bahamas", despite having "Bahamas" as the only country named on the coin itself. And they were struck at The Royal Mint, although of course they are not "British" as both of the dies in that mule were from different Commonwealth countries.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis
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zookeeperz's Avatar
United Kingdom
694 Posts
 Posted 12/09/2025  9:42 pm  Show Profile   Bookmark this reply Add zookeeperz to your friends list Get a Link to this Reply
Here's my example bought about a year ago for £20 I hope you yourself and family have a great xmas
Questions-On-The-Undated-20-P
Questions-On-The-Undated-20-P
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jbuck's Avatar
United States
187702 Posts
 Posted 12/10/2025  08:37 am  Show Profile   Bookmark this reply Add jbuck to your friends list Get a Link to this Reply

Quote:
Here's my example bought about a year ago for £20
Very nice!
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