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How To Remove The Green "Gunk" From Pennies

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 Posted 12/09/2017  05:41 am  Show Profile   Bookmark this reply Add okiecoiner to your friends list
As others have stated .. if it's the soft, oily green stuff, it's PVC contamination and easily removed with acetone (try to get 100% proof from hardware store, not nail polish remover). You may see a little discoloration once it's off depending on how long it's been there. If it's hard and crusty, acetone won't remove it all, so do as suggested above with verdi-care. Under the hard/crusty stuff, it will have already started to eat the metal and you most probably will have discoloration and pitting. I'd advise you to stay away from goo-gone.
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Canada
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 Posted 12/09/2017  3:28 pm  Show Profile   Bookmark this reply Add Tee to your friends list
Hey guys and gals

Along the same line of questioning, I rediscovered some nickels that I had put away (1940 - 1953) and found there was rust spots on some of them. Would vertical-care help remove that? Acetone didn't seem to remove anything from the coins I used it on.
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 Posted 12/09/2017  3:43 pm  Show Profile   Bookmark this reply Add otto to your friends list

Quote:
try to get 100% proof [acetone] from hardware store, not nail polish remover


Not too long ago I checked out the varieties of nail polish removers at a Dollar General. They actually did have a "professional strength" that is pure acetone. It's container was smaller and easier to pour than the paint store's container that I have since bought. And the unit price was no higher -- probably a bit lower.
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 Posted 12/09/2017  5:48 pm  Show Profile   Bookmark this reply Add Coinfrog to your friends list
Strongly recommend Verdi-Care.
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 Posted 12/09/2017  6:25 pm  Show Profile   Bookmark this reply Add North of 49 to your friends list
Thank you very much to all for your helpful responses. I should have been more clear about the problem. These pennies were stored in a low grade plastic holder that I bought on the cheap. When I first started organizing coins I stared with pennies and I started cheap, I stored them in a cupboard in my basement. So the issue is a combination on damp and poor plastic. As for the green gunk it can be wiped off with a paper towel and so from you comments I'm guessing it is PVC residue.
I will pick up some acetone and give that a try later on this week. I will post some before and after pics.
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 Posted 12/09/2017  7:06 pm  Show Profile   Check SPP-Ottawa's eBay Listings Bookmark this reply Add SPP-Ottawa to your friends list

Quote:
Along the same line of questioning, I rediscovered some nickels that I had put away (1940 - 1953) and found there was rust spots on some of them. Would vertical-care help remove that? Acetone didn't seem to remove anything from the coins I used it on.


On coins from 1940-1941, 1946 to 1950, the rust staining should be removable, but not by acetone. You might need a rust solvent. Those are pure nickel coins and the rust is from being stored in proximity with the chrome-plated steel coins.

On the 1944-1945, and 1951-1953 coins, the answer is no. The surface rust can be removed, but the rust is from the steel planchet, so the chromium plating and coin's surface is damaged.

"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

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 Posted 12/09/2017  7:33 pm  Show Profile   Bookmark this reply Add Tee to your friends list
Thanks Roger
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 Posted 12/09/2017  11:28 pm  Show Profile   Bookmark this reply Add Canacoins to your friends list

Quote:
Would vertical-care help remove that?


Maybe I'm just tired but...
as opposed to horizontal?
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 Posted 12/10/2017  04:41 am  Show Profile   Bookmark this reply Add okiecoiner to your friends list
Has anyone ever tried CLR(or something like it) on nickels that have the rust spots? I'm not a collector, so I have no idea what would happen and I don't have any "rusty" 5 cents to try it on. I'm just curious. The TV commercials seem to suggest that it removes rust(y) spots.
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 Posted 12/10/2017  5:54 pm  Show Profile   Bookmark this reply Add DEVLEC to your friends list

Quote:
Has anyone ever tried CLR(or something like it)


We could easily try it,..but my guess is that it might work on nickel (worth trying on plain nickels) but it would also probably attack copper or bronze in a very negative way..

..(again,..worth trying on scrap coins..),..but I don't have any CLR..
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 Posted 12/10/2017  5:57 pm  Show Profile   Bookmark this reply Add Altaira to your friends list
According to BadThad, CLR is acidic and will do permanent damage to a coin's surface. http://goccf.com/t/189688#1752237

But a rusty plated steel nickel is already damaged beyond saving anyway, so it's fair game for experimenting.
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 Posted 12/10/2017  5:58 pm  Show Profile   Bookmark this reply Add otto to your friends list

Quote:
it [CLR] would also probably attack copper or bronze in a very negative way

It does. I tried it a a junk cent once for about a day or so.
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 Posted 12/10/2017  6:02 pm  Show Profile   Bookmark this reply Add Coinfrog to your friends list
No, no - DO NOT use CLR, as wonderful a product as it is for other purposes.
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 Posted 12/10/2017  8:57 pm  Show Profile   Check spru's eBay Listings Bookmark this reply Add spru to your friends list
What about Naval Jelly?
In Memory of Crazyb0 12-26-1951 to 7-27-2020
In Memory of Tootallious 3-31-1964 to 4-15-2020
In Memory of T-BOP 10-12-1949 to 1-19-2024
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 Posted 12/10/2017  10:39 pm  Show Profile   Bookmark this reply Add SsuperDdave to your friends list
Naval Jelly is phosphoric acid, which is probably less dangerous to "good" steel than one might think. Aside the fact that it leaves a coating behind....
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