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 Replies: 41 / Views: 3,232 |
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Pillar of the Community
United States
2534 Posts |
Edited by CoinHI
09/25/2022 8:53 pm
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Moderator
 United States
33739 Posts |
@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.
"If you climb a good tree, you get a push."
-----Ghanaian proverb
"The danger we all now face is distinguishing between what is authentic and what is performed."
-----King Adz
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Pillar of the Community
 United States
2534 Posts |
"Pride is yoked with callous behavior, as humility is with compassion." St. Gregory Palamas Top Finds - 1969-S 1c FS-101 http://goccf.com/t/477681 1976 D WQ FS-101 http://goccf.com/t/382777 - 1968 D 1c FS-801 http://goccf.com/t/422254Cool clashed dies - 1972 D 1c http://goccf.com/t/429855&SearchTerms=CCLStruck-In Rim Burr - 1969 S 1c http://goccf.com/t/425587&SearchTerms=burrFloating (Type II) Counterclash - 1978 D 1c http://goccf.com/t/434991&SearchTerms=1978 |
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Bedrock of the Community
United States
94367 Posts |
I'm open to thoughts as well.
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Bedrock of the Community
United States
10635 Posts |
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. .  |
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Moderator
United States
77075 Posts |
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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Pillar of the Community
United States
2534 Posts |
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.
"Pride is yoked with callous behavior, as humility is with compassion." St. Gregory Palamas Top Finds - 1969-S 1c FS-101 http://goccf.com/t/477681 1976 D WQ FS-101 http://goccf.com/t/382777 - 1968 D 1c FS-801 http://goccf.com/t/422254Cool clashed dies - 1972 D 1c http://goccf.com/t/429855&SearchTerms=CCLStruck-In Rim Burr - 1969 S 1c http://goccf.com/t/425587&SearchTerms=burrFloating (Type II) Counterclash - 1978 D 1c http://goccf.com/t/434991&SearchTerms=1978 |
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Bedrock of the Community
United States
62064 Posts |
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) |
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Pillar of the Community
Canada
6244 Posts |
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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Pillar of the Community
United States
2534 Posts |
Thanks for the responses.
I wonder if XRF or similar technology would be able to detect the surface composition of the metal.
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Pillar of the Community
Canada
6244 Posts |
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Pillar of the Community
United States
2534 Posts |
Quote:
For this an sdx will do Do you have access to one? I can send this to you if possible.
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Pillar of the Community
United States
2534 Posts |
I finally got an XRF reading for this coin. Is this a normal clad result?  "Pride is yoked with callous behavior, as humility is with compassion." St. Gregory Palamas Top Finds - 1969-S 1c FS-101 http://goccf.com/t/477681 1976 D WQ FS-101 http://goccf.com/t/382777 - 1968 D 1c FS-801 http://goccf.com/t/422254Cool clashed dies - 1972 D 1c http://goccf.com/t/429855&SearchTerms=CCLStruck-In Rim Burr - 1969 S 1c http://goccf.com/t/425587&SearchTerms=burrFloating (Type II) Counterclash - 1978 D 1c http://goccf.com/t/434991&SearchTerms=1978 |
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Bedrock of the Community
United States
20697 Posts |
The cladding should be 75% Cu and 25% Ni.
Inordinately fascinated by bits of metal with strange markings and figures
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Pillar of the Community
United States
2534 Posts |
Thanks Hondo, This would be evidence in the direction of an annealing error I believe. I just don't know what certified annealing errors XRF analysis would be though. I don't see how environmental damage would cause these results.
"Pride is yoked with callous behavior, as humility is with compassion." St. Gregory Palamas Top Finds - 1969-S 1c FS-101 http://goccf.com/t/477681 1976 D WQ FS-101 http://goccf.com/t/382777 - 1968 D 1c FS-801 http://goccf.com/t/422254Cool clashed dies - 1972 D 1c http://goccf.com/t/429855&SearchTerms=CCLStruck-In Rim Burr - 1969 S 1c http://goccf.com/t/425587&SearchTerms=burrFloating (Type II) Counterclash - 1978 D 1c http://goccf.com/t/434991&SearchTerms=1978 |
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Pillar of the Community
 United States
5214 Posts |
That depends on how deep the XRF penetrates. The cladding is 75/25, but the core is like 95/5 copper. If the machine read mostly cladding and a little core, the result would be slightly more Cu than 75, slightly less Ni than 25.
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Replies: 41 / Views: 3,232 |
Posted 09/25/2022 5:20 pm
