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An Acid Burn? 1980 Roosevelt Dime. Never Seen Something Like This.

 
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 Posted 07/06/2022  5:40 pm Show Profile   Bookmark this topic Add weasel_spit to your friends list Get a Link to this Message
Hello, I'm new to this forum so if this is the wrong place to be, my apologies.

Has anyone seen something like this. If so, what could it be.

There is no damage on the back from it being smashed, hit forcefully, or with a blunt strike.

Thank you in advance.





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 Posted 07/06/2022  5:46 pm  Show Profile   Bookmark this reply Add Coinfrog to your friends list Get a Link to this Reply
Acid or heat, I'm guessing.



to the CCF!
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 Posted 07/06/2022  6:08 pm  Show Profile   Bookmark this reply Add ijn1944 to your friends list Get a Link to this Reply
I'm seeing heat damage.

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 Posted 07/06/2022  6:19 pm  Show Profile   Bookmark this reply Add Spence to your friends list Get a Link to this Reply
Done.

I'm on team heat for this one.
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 Posted 07/06/2022  6:25 pm  Show Profile   Bookmark this reply Add Sap to your friends list Get a Link to this Reply
Moved it for you.

I would reckon acid damage over heat; the bubbling and particularly the pitting is what I would expect from acid. Maybe it's a "Coca-cola coin".

Though I would also expect acid to eat away at the copper on the rim, leaving a "spool" shaped cross-section; I'm not really seeing that from what I can see of the rim in these pics.
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 Posted 07/06/2022  8:09 pm  Show Profile   Bookmark this reply Add silviosi to your friends list Get a Link to this Reply
I agree with SAP, after heat the acid was come on action. The Ni is affected like this be mid strong acid. I never test the Coca-Cola on coins except to clean the calcium.
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 Posted 07/06/2022  8:47 pm  Show Profile   Bookmark this reply Add Cujohn to your friends list Get a Link to this Reply
to the CCF and heat damage.
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 Posted 07/06/2022  9:51 pm  Show Profile   Bookmark this reply Add DaRukus660 to your friends list Get a Link to this Reply


looks so weird.

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 Posted 07/06/2022  11:02 pm  Show Profile   Bookmark this reply Add sel_69l to your friends list Get a Link to this Reply
Not all is lost; it's still worth two undamaged nickels!
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 Posted 07/06/2022  11:07 pm  Show Profile   Bookmark this reply Add Yokozuna to your friends list Get a Link to this Reply
to the CCF!

The pitting looks like acid corrosion and the bubble looks more like heat damage. This coin makes me think of "The Phantom of the Opera!"
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 Posted 07/07/2022  04:37 am  Show Profile   Bookmark this reply Add John1 to your friends list Get a Link to this Reply

Heat and or acid, either way it is PMD. Maybe weight would help. Also, if acid the copper on the edge most times will be eaten away.
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( I'm no pro, it's just my humble opinion )
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 Posted 07/07/2022  11:30 am  Show Profile   Bookmark this reply Add merclover to your friends list Get a Link to this Reply
That bubble is from heat damage of some sort. How/why? Who knows unless you were present when it happened. Doesn't really matter as damage is damage, post mint damage here.
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 Posted 07/07/2022  7:07 pm  Show Profile   Bookmark this reply Add weasel_spit to your friends list Get a Link to this Reply
Thank you everyone. I really do appreciate all the responses and guidance.
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 Posted 07/08/2022  10:34 am  Show Profile   Bookmark this reply Add coop to your friends list Get a Link to this Reply
The way to tell the difference?
Weight:
Acid reduces the weight
.
Heat leave the weight normal but show bubbles on the coins:


Surface affected:
On non clad planchets the metal is pushed and distorted on the surface of the coin:


CoopHome: How can you tell the difference between acid dipped coins and heat affected coins? Weight
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