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 Replies: 71 / Views: 12,308 |
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Pillar of the Community
 United States
1901 Posts |
Ok I will measure the coin and see if it's 18mm and 1.35mm not a little over 19mm
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Pillar of the Community
United States
1901 Posts |
It's 19.04mm by 1.17mm thick
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Bedrock of the Community
United States
17884 Posts |
Quote:
Also I was rummaging through some information and in 1982 the US made coinage for Panama' s 1/10 Balboa. It is 18mm and weighs 2.25 grams made from copper nickel clad copper. Close I thought We struck the Panama coins on the same planchets we used for our own coins. The 1/10th Balboa was struck on US clad dime planchets, nothing like the subject coin. |
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Pillar of the Community
United States
586 Posts |
Looks like you are correct Conder, as always Lol! I read a number of US planchet errors came from Panama and assumed because of the size and weight. Would you agree the .4 grams difference in weight is worth looking into? For a Lincoln Cent it seems unusual. Also, if it had a high zinc content it might explain the lack of definition in the coin strike...maybe |
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Pillar of the Community
United States
1901 Posts |
I need advice on what to do next if got it in a 2x2 locked up so the wife don't hock it lol
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Pillar of the Community
United States
1901 Posts |
And I have a gut feeling it's copper or brass whatever 1982 and before planchet SG test is closest to it
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Pillar of the Community
United States
1901 Posts |
Ok so I got a metal calculator did brass with diameter and what's left to complete the thickness of a penny and it is .868 grams which would put the planchet at 2.97 grams but I'll only know for sure when I get it analyze because if I did it with zinc it is 2.7 grams there about.... I'm finding all diffrent ways to prove my thoughts wrong lol
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Pillar of the Community
United States
3463 Posts |
If a coin is two different metals, not alloyed together, but one plated onto the other, a SG gravity test can't tell you which metal it is. The test won't prove it is either of them, only a combination of the two.
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Pillar of the Community
United States
1901 Posts |
I know this....... copper penny is zinc and copper mixed right which is brass correct
Edited by Mrzllewellyn
09/22/2017 8:21 pm
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Pillar of the Community
United States
3463 Posts |
No, it is Copper plated Zinc. Brass is an alloy, not plated.
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Pillar of the Community
United States
1901 Posts |
I'm talking about old pennys not 83 on
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Bedrock of the Community
United States
17884 Posts |
Yes from 1963 to mid 1982 they were copper alloyed with zinc making them brass.
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Pillar of the Community
United States
2740 Posts |
Admittedly, I have not read the entire thread. But this would almost certainly be a cent struck on a zinc planchet (later plated with copper) punched out of rolled-thin stock. I have a half dozen or more underweight zinc cents, several weighing considerably less than 2 grams.
Error coin writer and researcher.
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Pillar of the Community
United States
3463 Posts |
 That would be the only answer that would fit the results of the testing that has been done thus far. |
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Pillar of the Community
United States
1901 Posts |
Well after I test it I will certainly let you know if you were correct or not
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Replies: 71 / Views: 12,308 |
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Posted 09/22/2017 09:22 am
