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1990 USA Penny Zinc Coating ?

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Valued Member

Canada
65 Posts
 Posted 07/10/2022  3:37 pm Show Profile   Bookmark this topic Add ABuchan to your friends list Get a Link to this Message Number of Subscribers
I've recently bought some jewelry boxes from the attic of a barn, which had a few dollars in pennies and am wondering they are zinc plated and what years did the mints begin plating pennies? Is this 1990 USA Penny zinc coated? Also if the coating comes off (not by circulation but by heating and cooling) can it still be graded high?

1990-USA-Penny-Zinc-Coating-?
1990-USA-Penny-Zinc-Coating-?
1990-USA-Penny-Zinc-Coating-?
1990-USA-Penny-Zinc-Coating-?
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JimmyD's Avatar
Canada
21610 Posts
 Posted 07/10/2022  3:54 pm  Show Profile   Bookmark this reply Add JimmyD to your friends list Get a Link to this Reply
The mint started plating zinc core planchets in 1982 with copper.
What you have are coins that were plated after market and the
plating is wearing off. They are now considered damaged coins.
Not worth the time or effort to try to remove it as they would
still only be worth 1 cent each.
Edited by JimmyD
07/10/2022 3:58 pm
Pillar of the Community
United States
797 Posts
 Posted 07/10/2022  5:27 pm  Show Profile   Bookmark this reply Add JTCC to your friends list Get a Link to this Reply
I agree.
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John1's Avatar
United States
56855 Posts
 Posted 07/10/2022  5:35 pm  Show Profile   Bookmark this reply Add John1 to your friends list Get a Link to this Reply
I agree with PMD.
John1
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KYCopperCoins's Avatar
United States
1361 Posts
 Posted 07/10/2022  5:48 pm  Show Profile   Bookmark this reply Add KYCopperCoins to your friends list Get a Link to this Reply
It appears that it has a coating of something someone has added to the coin after the mint which is flaking off.
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Coinfrog's Avatar
United States
94367 Posts
 Posted 07/10/2022  6:59 pm  Show Profile   Bookmark this reply Add Coinfrog to your friends list Get a Link to this Reply
Agree, later plating now flaking off.
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BadThad's Avatar
United States
19951 Posts
 Posted 07/10/2022  7:15 pm  Show Profile   Bookmark this reply Add BadThad to your friends list Get a Link to this Reply
Copper plated zinc, this coin has been exposed to acid. PMD
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Valued Member
Canada
65 Posts
 Posted 07/10/2022  7:46 pm  Show Profile   Bookmark this reply Add ABuchan to your friends list Get a Link to this Reply
I'm wondering if anyone else has had coin plating come off from being in extreme heat them
n cold (barn attic) over years?
I find it difficult to believe from the coins found in the boxes that they were all 'plated'by someone after.
Anyways I still appreciate the comments (under the grading section ')
Here's a couple others.



1990-USA-Penny-Zinc-Coating-?
1990-USA-Penny-Zinc-Coating-?
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merclover's Avatar
United States
10635 Posts
 Posted 07/10/2022  8:59 pm  Show Profile   Bookmark this reply Add merclover to your friends list Get a Link to this Reply
Plating is easily and cheaply done by 'many o high school chemistry classes, and the fact that you found a jewelry box full says someone was planning to make jewelry out of our of them. Very common occurrence.
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sel_69l's Avatar
Australia
21788 Posts
 Posted 07/10/2022  10:02 pm  Show Profile   Bookmark this reply Add sel_69l to your friends list Get a Link to this Reply
Electro plating with zinc is easy enough to do in a high school lab experiment.

However, it this case, the zinc core is showing through in the gash in Abe's shoulder.
I notice that 'IN GOD' is fainter than 'WE TRUST".
Copper plating in patches is gone, for whatever reason, but if heat was responsible, the coin would be blackened.

Anything can be assessed for condition but that is rather beside the point with the reasonable quality of pictures provided. Value one Cent, unfortunately.


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silviosi's Avatar
Canada
6244 Posts
 Posted 07/11/2022  12:12 am  Show Profile   Bookmark this reply Add silviosi to your friends list Get a Link to this Reply
Not all the coins are plated. The example of CAN 1960 is not plated coin so will not peel on the differences of the temperature or humidity. The first coin was plated after strike and they do a very poor job.
Valued Member
Canada
65 Posts
 Posted 07/11/2022  04:52 am  Show Profile   Bookmark this reply Add ABuchan to your friends list Get a Link to this Reply
So what years were USA pennies plated with copper or zinc or etc....? Is it only after 1981, I'm confused with the comments.
Here's a couple more examples...

1990-USA-Penny-Zinc-Coating-?
1990-USA-Penny-Zinc-Coating-?
1990-USA-Penny-Zinc-Coating-?
1990-USA-Penny-Zinc-Coating-?
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John1's Avatar
United States
56855 Posts
 Posted 07/11/2022  06:58 am  Show Profile   Bookmark this reply Add John1 to your friends list Get a Link to this Reply
Almost looks like paint to me. If not paint it is plated. U.S. cents are copper plated starting in 1982. Zinc plated was only in 1943.
John1
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JimmyD's Avatar
Canada
21610 Posts
 Posted 07/11/2022  08:50 am  Show Profile   Bookmark this reply Add JimmyD to your friends list Get a Link to this Reply
It doesn't really matter if they were painted or coated.
The fact that it was done after they left the mint makes them PMD and only worth face value.
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IndianGoldEagle's Avatar
United States
36745 Posts
 Posted 07/12/2022  09:01 am  Show Profile   Bookmark this reply Add IndianGoldEagle to your friends list Get a Link to this Reply
Post mint damage.
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merclover's Avatar
United States
10635 Posts
 Posted 07/12/2022  4:22 pm  Show Profile   Bookmark this reply Add merclover to your friends list Get a Link to this Reply
Agreed, post mint damage.
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