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Odd Deterioration/Buildup On Coins

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w1ll's Avatar
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23 Posts
 Posted 08/09/2024  1:13 pm Show Profile   Bookmark this topic Add w1ll to your friends list Get a Link to this Message Number of Subscribers
Hello. I have a few coins that have (possibly) related issues. Any thoughts on these? Sorry for poor image quality due to the coins being in holders, I can cut them out if need be. Thanks in advance!

1965 Quarter:
Odd-Deterioration/Buildup-On-Coins

1921 Penny:
Odd-Deterioration/Buildup-On-Coins

2007 P Dime (see left of mouth):
Odd-Deterioration/Buildup-On-Coins
Odd-Deterioration/Buildup-On-Coins
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ijn1944's Avatar
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19143 Posts
 Posted 08/09/2024  1:21 pm  Show Profile   Bookmark this reply Add ijn1944 to your friends list Get a Link to this Reply
The 1921 cent appears to have some dried glue on the surface. Suggest giving the coin a looooong soak in 100% acetone to reduce or eliminate the substance.
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Spence's Avatar
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34397 Posts
 Posted 08/09/2024  1:35 pm  Show Profile   Bookmark this reply Add Spence to your friends list Get a Link to this Reply
@w1, first welcome to CCF. Second, while it generally is best practice to only post one coin per thread so that we can give each one the attention that it deserves, in this case it seems fine to keep this group of coins together.

Assuming that in all cases, the buildup is proud compared with the rest of the surface of the coins, then you have some sort of dried adhesive or residue on the surface. In no case will this add to the numismatic value.
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w1ll's Avatar
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 Posted 08/09/2024  1:44 pm  Show Profile   Bookmark this reply Add w1ll to your friends list Get a Link to this Reply
Thank you! You are right, I probably should have split them up, I just didn't want to spam the forum.

I also didn't properly describe the coins. The penny is actually the only one that has buildup, and it does appear to be glue or adhesive of some kind.

The quarter and dime have different "issues", both appearing to have been "eaten away" (not sure what the correct term would be). This is hardly noticeable on the dime and may be nothing, but is much more visible on the quarter.
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Seeker_101's Avatar
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1791 Posts
 Posted 08/09/2024  2:03 pm  Show Profile   Bookmark this reply Add Seeker_101 to your friends list Get a Link to this Reply
I think some of it is PMD on the quarter but I would like to see IGWT closer up.

The obverse of the dime looks to be environmental to me. It was laying face up with something covering the shinier part.

The reverse of the dime appears to be struck through oil in my opinion. There's virtually no wear on the reverse.
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jbuck's Avatar
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w1ll's Avatar
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 Posted 08/09/2024  2:12 pm  Show Profile   Bookmark this reply Add w1ll to your friends list Get a Link to this Reply
Here are some closeup images of the quarter:

Odd-Deterioration/Buildup-On-Coins
Odd-Deterioration/Buildup-On-Coins
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HondoB's Avatar
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25086 Posts
 Posted 08/09/2024  2:22 pm  Show Profile   Bookmark this reply Add HondoB to your friends list Get a Link to this Reply
It looks like a strong acid has been applied to this coin.
Inordinately fascinated by bits of metal with strange markings and figures
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Seeker_101's Avatar
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1791 Posts
 Posted 08/09/2024  2:27 pm  Show Profile   Bookmark this reply Add Seeker_101 to your friends list Get a Link to this Reply
Thank you for the close ups. Great pics! Since the lettering is clearly affected, I believe this to be damage - possibly by a corrosive liquid. But see what the experts here say.

There might also be a die crack on the reverse of the dime between the oak branch and the E in dime.
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Errers and Varietys's Avatar
United States
73937 Posts
 Posted 08/09/2024  2:30 pm  Show Profile   Bookmark this reply Add Errers and Varietys to your friends list Get a Link to this Reply
The quarter looks like it has acid damage, while the Wheat cent has dried glue or epoxy on it. The Dime appears to be Struck Through Grease.
Errers and Varietys.
Edited by Errers and Varietys
08/09/2024 2:31 pm
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Coinfrog's Avatar
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94367 Posts
 Posted 08/09/2024  2:36 pm  Show Profile   Bookmark this reply Add Coinfrog to your friends list Get a Link to this Reply
All good opinions.



to the CCF!
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w1ll's Avatar
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 Posted 08/09/2024  2:57 pm  Show Profile   Bookmark this reply Add w1ll to your friends list Get a Link to this Reply
Acid damage, how interesting! Thank you! Heres a better image of that possible die crack on the dime- I didn't even notice that!

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Dearborn's Avatar
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95443 Posts
 Posted 08/09/2024  3:12 pm  Show Profile   Bookmark this reply Add Dearborn to your friends list Get a Link to this Reply
to CCF.
as Spence stated one coin per topic for ease of conversation.
Also please remove the coins from the 2x2's prior to imaging them. the film can diffuse and cause blurry images and also create unwanted glare.
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Yokozuna's Avatar
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 Posted 08/09/2024  3:17 pm  Show Profile   Bookmark this reply Add Yokozuna to your friends list Get a Link to this Reply
to the CCF!

the dime does have the look of a 'Struck Through Oil/Grease' error. It's interesting that a thin layer of oil causes a difference in the surface reflection and luster.

I don't think this type of strike through has an effect on the value of the coin, but it is an error, and it will only 'cost' 10¢ if you decide to keep it in your collection.
ANA ID: 3203813 - CONECA ID: N-5637 Clean a coin that may be worth collecting? Please DON'T! When in doubt, leave it dirty!!
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Marv65's Avatar
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10504 Posts
 Posted 08/09/2024  3:54 pm  Show Profile   Bookmark this reply Add Marv65 to your friends list Get a Link to this Reply
Acid quarter, glue coins, die chip dime.
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w1ll's Avatar
United States
23 Posts
 Posted 08/09/2024  4:20 pm  Show Profile   Bookmark this reply Add w1ll to your friends list Get a Link to this Reply
Very neat, thanks so much!!
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