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2012 D Nickel, Improperly Annealed?

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 Posted 05/24/2023  10:37 pm Show Profile   Bookmark this topic Add jvcv_0 to your friends list Get a Link to this Message
I've been off the board for a bit and have some interesting finds. Here's one. Rich copper color on both sides and edges. I've posted a lot of coins I thought were improperly annealed but the experts said we're PMD. This one is the real deal I believe.




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 Posted 05/24/2023  10:47 pm  Show Profile   Bookmark this reply Add Brandmeister to your friends list Get a Link to this Reply
Just posted a similar coin. It seems to be a chemical damaged or buried coin. Apparently common to find during metal detecting.

http://goccf.com/t/446068&whichpage=2#3851503
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 Posted 05/24/2023  10:53 pm  Show Profile   Bookmark this reply Add nick10 to your friends list Get a Link to this Reply
Your coin looks to match number 1 in the list of Dirty Dozen Damages. Even though there is no premium value to these, you might try to find a nice example of each.

1) discoloration - stains from a beverage, or environmental damage from being buried, heated, etc.
2) scrapes over much of the coin - damage from sliding on pavement, a parking lot coin
3) coin bent or edges not round - it has been smashed with a hammer
4) coin blank on all or most of one side - someone machined the surface away or sanded it down
5) mirrored lettering - a vise job, a coin squeezed against another in a vise
6) rough, pebbly surfaces - a coin eroded by acid, it might now be underweight
7) smooth rims, smaller diameter - was trapped rolling inside a dryer, a " Dryer Coin", or tapped with a spoon
8) clear mounds on coin - glue that has dried transparently
9) small indentations in the shape of the letter D - marks left by the impact of the reeded edge of another coin
10) large blisters - coin exposed to high heat, such as in a campfire
11) shapes, often letters or numbers, not indented or raised - Pareidolia (like animal shapes in a cloud)
12) a circular scrape just inside the rim - " Ring of Death" caused by a coin wrapping or vending machine

Don't despair! Error coins remain ready to find from circulation, but they are outnumbered by unusual looking coins that merely have been damaged. If you can imagine a way to change an undamaged coin into one like you see, that's probably exactly what happened to it. Changes to a coin after it leaves the mint's striking chamber are considered post mint damage, or PMD, and have no premium value.
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 Posted 05/25/2023  06:18 am  Show Profile   Bookmark this reply Add John1 to your friends list Get a Link to this Reply
( I'm no pro, it's just my humble opinion )
Searched 6.5 +/- Million Cents Since 1971
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Topic Starter
United States
179 Posts
 Posted 05/25/2023  06:56 am  Show Profile   Bookmark this reply Add jvcv_0 to your friends list Get a Link to this Reply
Since the consensus was that it was PMD, I cleaned it, just a light rinse with warm water for 30 seconds. So now, are you SURE it's not improperly annealed or other mint error?


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 Posted 05/25/2023  09:12 am  Show Profile   Bookmark this reply Add ijn1944 to your friends list Get a Link to this Reply
I'm leaning toward post-strike damage, with a good dose of environmental toning/staining. Just my opinion.
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 Posted 05/25/2023  09:42 am  Show Profile   Bookmark this reply Add Coinfrog to your friends list Get a Link to this Reply
I'm in the PMD/acidic exposure camp.
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 Posted 05/25/2023  09:43 am  Show Profile   Bookmark this reply Add oddguy to your friends list Get a Link to this Reply
All I know is, it looks like other nickels that has been in a fountain.
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 Posted 05/25/2023  10:12 am  Show Profile   Bookmark this reply Add jbuck to your friends list Get a Link to this Reply
It appears to be environmental damage, although I think it looks kinda cool. No additional value, but still a fun keeper as an example what can happen to a coin in the wild.
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 Posted 05/25/2023  11:39 am  Show Profile   Bookmark this reply Add Tacc to your friends list Get a Link to this Reply

Enviromental.
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 Posted 05/25/2023  1:35 pm  Show Profile   Bookmark this reply Add BStrauss3 to your friends list Get a Link to this Reply
Annealing is a heat treatment process to make the planchets softer for striking.

Four things can go wrong...

* Too hot
* Too cold
* Oxygen in the annealing oven
* Improper quenching

https://www.error-ref.com/improper-annealing/
-----Burton
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Owned by four cats and a wife of 39 years (joined 1983)

PS: ANA's records are messed up, they show me as a 50-year member and I'm now Emeritus
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 Posted 05/25/2023  4:03 pm  Show Profile   Bookmark this reply Add jvcv_0 to your friends list Get a Link to this Reply
Got it on a scale. 4.81 grams. Does this change anything?


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 Posted 05/25/2023  4:44 pm  Show Profile   Bookmark this reply Add macmercury to your friends list Get a Link to this Reply
I also agree Enviromental created this nickel.

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 Posted 05/25/2023  4:57 pm  Show Profile   Bookmark this reply Add silviosi to your friends list Get a Link to this Reply
Thank you DEAR. The quantity of the Cu in Nickels it is to low to made such migration with out the EMF interferences to change the ionic stability.

The texture of the coin show clear acidic interferences. I think more to chlorhydric acid at low saturation. I have same results with nickels let one winter in the soil mixt with horse faecalis (very acidic).
Never argue with an idiot. First they will drag you down to their level. Then, they will beat you with experience. (MARK TWAIN)
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 Posted 05/25/2023  5:20 pm  Show Profile   Bookmark this reply Add John1 to your friends list Get a Link to this Reply
My vote is Enviromental damage.
John1
( I'm no pro, it's just my humble opinion )
Searched 6.5 +/- Million Cents Since 1971
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