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1997 P 25c Improperly Annealed Planchet

 
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Author Previous TopicReplies: 11 / Views: 471Next Topic  
Pillar of the Community
United States
1528 Posts
 Posted 09/25/2022  4:28 pm Show Profile   Bookmark this topic Add CoinHI to your friends list Get a Link to this Message
Aloha! Here is a recent pickup that the seller didn't provide great photos for but at $1.50 I was willing to gamble and I think it paid off. I really like the color and toning on this quarter and am pretty confident this is a genuine planchet error. The closeup of the eagles head shows what I believe are distinct islands of undiffused cladding surrounded by a sea of migrated copper metal. As Mike Diamond has pointed out on similar topics previous, this effect is difficult to get on ED coins. I think the edge photo confirms this as an annealment error as well. Opinions are always welcome and thanks for looking!

Weight - 5.66g





Best Find - 1976 D WQ DDO-001 http://goccf.com/t/382777
Edited by CoinHI
09/25/2022 8:53 pm
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United States
25481 Posts
 Posted 09/25/2022  4:31 pm  Show Profile   Bookmark this reply Add Spence to your friends list Get a Link to this Reply
@coinhi, you know way more about this than I do, I'm gonna watch how this thread progresses and hope to learn something! Thx for posting.
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Pillar of the Community
United States
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 Posted 09/25/2022  5:20 pm  Show Profile   Bookmark this reply Add CoinHI to your friends list Get a Link to this Reply
Thanks Spence, you should read this link to error-ref. https://www.error-ref.com/?s=improperly+annealed
Best Find - 1976 D WQ DDO-001 http://goccf.com/t/382777
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 Posted 09/25/2022  5:28 pm  Show Profile   Bookmark this reply Add Coinfrog to your friends list Get a Link to this Reply
I'm open to thoughts as well.
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 Posted 09/25/2022  6:11 pm  Show Profile   Bookmark this reply Add merclover to your friends list Get a Link to this Reply
The way the platting is wearing off, I don't think it's an improperly annealed planchet. Looks to have been effected by environmental issues. Just my opinion. .
ša va bien aller

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 Posted 09/25/2022  9:08 pm  Show Profile   Check Dearborn's eBay Listings Bookmark this reply Add Dearborn to your friends list Get a Link to this Reply
If it were an improperly annealed coin, the reeding would retain the bright copper edge because the collar would clean it up as the coin was ejected from the striking chamber. (or so as I have read here on another topic on the same subject.)
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 Posted 09/26/2022  03:21 am  Show Profile   Bookmark this reply Add CoinHI to your friends list Get a Link to this Reply
You are right abut that Dearborn but I think that applies to BU coins. This coin has some circulation wear and some toning which is diminishing the brightness.
Best Find - 1976 D WQ DDO-001 http://goccf.com/t/382777
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 Posted 09/26/2022  11:59 am  Show Profile   Bookmark this reply Add coop to your friends list Get a Link to this Reply
Note the coin wear on the Head of the eagle is showing the color of the planchet, (normal color) on those area. There is a coating on the coin. (Possible metal detector coin find)


Coin circulation shows the original color of the planchet when the tops of the highest areas are circulated and remove the coating. (Original color comes back)
Richard S. Cooper
Some have asked about my images I use and I'm glad to say, you can now you can see the DVD in sections on youtube:
1. Intro, older coins, toned coins 2. Doubled dies 3. Die events, One of a kind errors 4. So called errors, Coin information 5. Coin information Types and Varieties, Overlays
Jefferson nickel doubled dies Wexler/Rebar complete listings

trail dies:http://www.traildies.com/
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 Posted 09/26/2022  1:56 pm  Show Profile   Bookmark this reply Add silviosi to your friends list Get a Link to this Reply
Seem very strange to be annealing problem. If we look at Observe, except the letter B all the others letters and the high relief it is dark. The Reverse same, only the high relief is darkened. The rim on observe has more cooper color and the sides of the coin are strange in color. Normally on annealing problems the side of the coin has the normal color.

IMHO seem the coin was treated with some solution or was in contact with some solution or vapors. CuS will give this color to Ni and the Cu. Your link talk about an different issue.
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 Posted 09/27/2022  2:31 pm  Show Profile   Bookmark this reply Add CoinHI to your friends list Get a Link to this Reply
Thanks for the responses.

I wonder if XRF or similar technology would be able to detect the surface composition of the metal.
Best Find - 1976 D WQ DDO-001 http://goccf.com/t/382777
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 Posted 09/27/2022  4:34 pm  Show Profile   Bookmark this reply Add silviosi to your friends list Get a Link to this Reply
For this an sdx will do
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 Posted 09/28/2022  03:53 am  Show Profile   Bookmark this reply Add CoinHI to your friends list Get a Link to this Reply

Quote:
For this an sdx will do


Do you have access to one? I can send this to you if possible.
Best Find - 1976 D WQ DDO-001 http://goccf.com/t/382777
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