1998 Penny PMD? - Coin Community Forum

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Author	Replies: 4 / Views: 1,296
Delareece Valued Member Canada 101 Posts	Posted 12/02/2012 5:49 pm Hey there, It's been a while since I've posted anything, so I decided to ask this question. As I was roll hunting pennies yesterday, I came across this 1998 penny with damage. I'm fairly positive this is PMD. My question is, what would cause this damage to a penny? I've never seen or heard of a piece of a penny literally "breaking" off. It appears to have snapped off somehow. Any ideas? Additional Information: If you can't clearly see it on the images, the edge where the piece appears to have "snapped" off is very jagged. It isn't a clean cut. The rest of the coin is not bent or mis-shapen in any way. Also, the white substance coming from the broken area is not on the coin... it appears to be "in" the coin. The copper plating seems to "fold over" and "flake" near the edges of the white on the Reverse. Obverse: Reverse: Angle: Edge: Edited by Delareece 12/02/2012 5:50 pm Report this Post to the Staff

artdio Pillar of the Community 1844 Posts	Posted 12/02/2012 5:58 pm It is possible that when the forming of the metals that dirt was still in the mix...I once bought a gold chain that started to break apart just like this penny..The Jewelery store explained that this sometimes happens .. Report this Post to the Staff
west- canuk Valued Member Canada 497 Posts	Posted 12/02/2012 6:10 pm Would this be the zinc core corroding, I think it turns white when it corrodes , and I believe it corrodes very easily and quickly with moisture, a pinhole or scratch through the copper plating and it wouldn't take too long for this to happen. Report this Post to the Staff
SPP-Ottawa Moderator Canada 10480 Posts	Posted 12/03/2012 12:01 am The slang, or common term, used to describe what you are seeing is called 'zinc rot'. It is a corrosive reaction from environmental damage. Collectors of US Memorial Lincoln cents curse at this phenomena often... https://goccf.com/t/121901 "Discovery follows discovery, each both raising and answering questions, each ending a long search, and each providing the new instruments for a new search." -- J. Robert Oppenheimer Content of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_US My eBay store Report this Post to the Staff
Delareece Valued Member Canada 101 Posts	Posted 12/03/2012 12:37 am Quote: The slang, or common term, used to describe what you are seeing is called 'zinc rot'. It is a corrosive reaction from environmental damage. Interesting. It's weird that this is the first one I've come across. Thanks for everybodies help! Report this Post to the Staff
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