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 Replies: 18 / Views: 2,928 |
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Bedrock of the Community
United States
94367 Posts |
Good explanation from Dr. coop.
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Moderator
 United States
97925 Posts |
Curious as to what the weight is, 2.5g or 3.11g. Could this be a copper 2009 that was heated?
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Bedrock of the Community
United States
19229 Posts |
Eager to hear back from Herestohoping...
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Moderator
Australia
16867 Posts |
Quote:
Could this be a copper 2009 that was heated? No. A copper/bronze coin under directed high heat (like a blowtorch) does "ripple", but the ripples are much finer than this. I'm not entirely sure what a zincoln will do under a blowtorch, but I suspect that it wouldn't look like this either. This looks to me like a "corrosion from within", as Coop suggests. Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis
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Pillar of the Community
Canada
6244 Posts |
@SAP Under the heat any metal at the point to melt or at the half of those temperatures, first change the colors and start to shrink no to expand. This it is molecular reactions.
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Moderator
United States
97925 Posts |
I wasn't referring to a 'blowtorch type of heat. maybe a furnace/quench routine could warp a copper coin.
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Valued Member
 United States
405 Posts |
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Pillar of the Community
Canada
6244 Posts |
Quote:
] wasn't referring to a 'blowtorch type of heat. maybe a furnace/quench routine could warp a copper coin. Totally agree.  |
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Valued Member
United States
405 Posts |
Crazy what you can find in rolls out of boxes!
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Bedrock of the Community
United States
62064 Posts |
Edited by coop
05/31/2022 3:33 pm
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Moderator
United States
97925 Posts |
Well with the weight identified as 2.5g, we now can say that this is not copper, but instead zinc/copper plated cent, but I still stand by my assessment that this was heated to achieve the warping we see.
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Valued Member
United States
405 Posts |
Ty all for the info didn't know people used torches on coins lol good to know though
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Pillar of the Community
United States
7174 Posts |
This is not a heated coin. I don't know what it is but as Silviosi says, the heat needed to wrinkle the copper plating would destroy the plating. And it would be black. It's just a few shades difference than a common cent. Maybe the planchet didn't get plated right, zinc rot started in the inside but not breaking any of the skin. Rot has to go somewhere so it buckled the plating.
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Bedrock of the Community
United States
62064 Posts |
At one time it was normal. Other wise the devices would not all be there. It was altered. How? The color changes on the coin indicate heat to me.
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Pillar of the Community
Canada
6244 Posts |
By the reflex of your photos, I will conclude was put on heat. I do not think at a torch, I am more versus an induction stove. Your coin took a heat above 200 deg and less then 700 deg C.
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Posted 05/29/2022 6:52 pm
Uncirculated American Silver Eagles 
