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2006 Canada Penny Edge Hollowed Out

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Canada
5 Posts
 Posted 07/29/2019  10:36 pm Show Profile   Bookmark this topic Add Merki to your friends list Get a Link to this Message Number of Subscribers
I found this 2006 penny, no logo, non magnetic. What is odd is the hollow rim below the date. The coin is hollowed out just past the metal rim. Is this unexplained damage or possible error?

2006-Canada-Penny-Edge-Hollowed-Out





2006-Canada-Penny-Edge-Hollowed-Out




2006-Canada-Penny-Edge-Hollowed-Out



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Canada
1984 Posts
 Posted 07/29/2019  10:50 pm  Show Profile   Bookmark this reply Add Smallcentguy to your friends list Get a Link to this Reply
The photos are not great. It looks like it might be a legitimate planchet flaw error. But if it is I would think that there should be some sort of Blakesley effect. From your photos it looks like there might be a Blakesley effect, but I am not sure. Can you post larger photos? Both sides?
Edited by Smallcentguy
07/29/2019 10:52 pm
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Canada
1984 Posts
 Posted 07/29/2019  10:51 pm  Show Profile   Bookmark this reply Add Smallcentguy to your friends list Get a Link to this Reply
And welcome by the way!
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Altaira's Avatar
Canada
2519 Posts
 Posted 07/30/2019  01:23 am  Show Profile   Bookmark this reply Add Altaira to your friends list Get a Link to this Reply
PMD, not an error but damage. If it was a clip that area would also have copper plating on it. What you're seeing here is zinc rot. The plating was damaged post-mint, and the zinc core corrodes faster than the copper plating.
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Canada
1984 Posts
 Posted 07/30/2019  07:58 am  Show Profile   Bookmark this reply Add Smallcentguy to your friends list Get a Link to this Reply
Just to clarify, Altaira, I am not saying this is a clip. What I meant was that if this was a pre strike planchet flaw error, you should see a Blakesley effect just as if it was a clip. Same physics should be at work if a pre strike flaw. I don't see an obvious Blakesley effect. Need better pictures.
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Coinfrog's Avatar
United States
94367 Posts
 Posted 07/30/2019  08:38 am  Show Profile   Bookmark this reply Add Coinfrog to your friends list Get a Link to this Reply
I lean toward simple damage.



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jbuck's Avatar
United States
189601 Posts
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gidjit's Avatar
Canada
1980 Posts
 Posted 07/30/2019  4:08 pm  Show Profile   Bookmark this reply Add gidjit to your friends list Get a Link to this Reply
i pull zinc coins like this out of the ground all the time metal detecting
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Altaira's Avatar
Canada
2519 Posts
 Posted 07/31/2019  08:29 am  Show Profile   Bookmark this reply Add Altaira to your friends list Get a Link to this Reply
Oops! Sorry, I saw a curved part and assumed the discussion was about a clip. I should read better next time. Either way, it still looks like PMD to me. If the coin was missing metal on that part before the strike, from a clip or a flawed planchet or whatever, the rim around it would also be thinned out. I don't see that happening here. Blakesley effect isn't always present if the clip is small, either.

The reason why the zinc has hollowed out from the copper is because of zinc rot, which happens when the copper plating is broken and the zinc corrodes away faster than copper.
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