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 Replies: 15 / Views: 2,312 |
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Bedrock of the Community
 United States
12477 Posts |
In Memory of Crazyb0 12-26-1951 to 7-27-2020
In Memory of Tootallious 3-31-1964 to 4-15-2020
In Memory of T-BOP 10-12-1949 to 1-19-2024
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Pillar of the Community
United States
8517 Posts |
Oregon coin geek.....*** GO BEAVS ! ! ! ***
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Pillar of the Community
United States
7626 Posts |
Improper alloying/annealing. Don't drop it...it might shatter!
Nice!
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Bedrock of the Community
Australia
21788 Posts |
An anachronism. First step backwards to being an ancient coin.  |
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Moderator
 United States
34427 Posts |
very interesting--thanks for sharing!
"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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Rest in Peace
United States
17900 Posts |
Pretty neat. Volcanic lava flow lines.
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Bedrock of the Community
United States
17884 Posts |
Doesn't look like a cracked planchet. I've seen coins that looked like that that were recovered from sewers.
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Bedrock of the Community
United States
12437 Posts |
It is not a cracked planchet or improper annealing, it is environmental damage.
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Bedrock of the Community
United States
94367 Posts |
biokemist - Thanks - would you elaborate, please.  |
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Bedrock of the Community
United States
12437 Posts |
Planchets do not crack and shatter like glass and improper annealing only affects the color of a coin, it does not produce cracks.
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Bedrock of the Community
United States
94367 Posts |
Thanks from all of us who don't really grasp these things.
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Bedrock of the Community
 United States
12477 Posts |
biokemist6, By environmental damage you mean chemical interactions along with temperatures that it was exposed to?
In Memory of Crazyb0 12-26-1951 to 7-27-2020
In Memory of Tootallious 3-31-1964 to 4-15-2020
In Memory of T-BOP 10-12-1949 to 1-19-2024
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Bedrock of the Community
United States
12477 Posts |
I can see how even natural seasonal temperature variations could cause an alloy to crack with uneven contraction and expansion. This is the only one of the batch like this that I've come across.
In Memory of Crazyb0 12-26-1951 to 7-27-2020
In Memory of Tootallious 3-31-1964 to 4-15-2020
In Memory of T-BOP 10-12-1949 to 1-19-2024
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Bedrock of the Community
United States
17884 Posts |
Quote:
I can see how even natural seasonal temperature variations could cause an alloy to crack with uneven contraction and expansion Only if you are talking seasons on Venus. |
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Bedrock of the Community
United States
12477 Posts |
I really just meant under the conditions in which it was stored, perhaps decades of an attic with temps going from lows under 10° and highs over 130°.
In Memory of Crazyb0 12-26-1951 to 7-27-2020
In Memory of Tootallious 3-31-1964 to 4-15-2020
In Memory of T-BOP 10-12-1949 to 1-19-2024
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Pillar of the Community
United States
3516 Posts |
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Replies: 15 / Views: 2,312 |
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Posted 12/06/2016 12:09 am
