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Strange Metal Bumps On A 1991-D Lincoln Cent.

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New Member
United States
37 Posts
 Posted 06/29/2018  1:48 pm  Show Profile   Bookmark this reply Add SawtoothJack to your friends list
Makes sense. One spot on the reverse actually looks like a volcano.
New Member
United States
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 Posted 06/29/2018  1:49 pm  Show Profile   Bookmark this reply Add SawtoothJack to your friends list
Thanks for your help. I'd never even heard of zinc rot before.
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34431 Posts
 Posted 06/29/2018  2:17 pm  Show Profile   Bookmark this reply Add Spence to your friends list

Quote:
I'd never even heard of zinc rot before.


If you hang out in this part of CCF for very long, you'll see that it comes up quite frequently. It is a great learning experience!
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 Posted 06/29/2018  2:25 pm  Show Profile   Bookmark this reply Add Dorado to your friends list
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 Posted 06/29/2018  3:17 pm  Show Profile   Bookmark this reply Add nfine to your friends list
I have to ask, how can you tell anything from those images?
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 Posted 06/29/2018  4:23 pm  Show Profile   Bookmark this reply Add moxking to your friends list
Bubbly surface + date = zinc rot. Photo is good enough to see that.
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 Posted 06/29/2018  4:31 pm  Show Profile   Bookmark this reply Add Coinfrog to your friends list
At first I thought it was something from the Mars Rover, but now it makes sense.
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 Posted 06/29/2018  6:05 pm  Show Profile   Bookmark this reply Add Mark1959 to your friends list
That's just a close up of lizard skin!


Strange-Metal-Bumps-On-A-1991-D-Lincoln-Cent.
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 Posted 06/30/2018  5:41 pm  Show Profile   Bookmark this reply Add BadThad to your friends list
Plating bubbles, normal:


Strange-Metal-Bumps-On-A-1991-D-Lincoln-Cent.
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 Posted 07/11/2018  03:31 am  Show Profile   Bookmark this reply Add Errers and Varietys to your friends list
These are called Plating Bubbles. It's very common on Copper plated Zinc planchets. http://www.error-ref.com/blisteredplating/
Errers and Varietys.
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 Posted 07/11/2018  08:16 am  Show Profile   Bookmark this reply Add just carl to your friends list
Similar bubbles found on many pennies from the 80's to 90's. Mint was still learning how to plate coins I guess.
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 Posted 07/11/2018  09:20 am  Show Profile   Bookmark this reply Add SilverDollar2017 to your friends list
It's just some plating bubbles. Doesn't increase the value of the coin.
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 Posted 07/12/2018  3:44 pm  Show Profile   Bookmark this reply Add Kopper Ken to your friends list
Zincoln zits!!!

KK
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 Posted 07/17/2018  07:58 am  Show Profile   Bookmark this reply Add SawtoothJack to your friends list
More like Lincoln snots. Looks just like he just let loose a nose shower, and probably had to clean the first beard afterwards.
(I also have one that looks like Lincoln has a Mohawk)
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 Posted 07/17/2018  08:00 am  Show Profile   Bookmark this reply Add SawtoothJack to your friends list
Thanks for the help everybody.
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