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 Replies: 18 / Views: 2,341 |
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Valued Member
 United States
98 Posts |
Yes actually, tested 7 Mercury dimes after testing the Nickel, each tested between 90-91% silver with the remainders all being copper, which I sold to the shop for $1 each |
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Bedrock of the Community
United States
94367 Posts |
Sorry, what exactly did you sell for $1 each?
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Pillar of the Community
United States
3207 Posts |
plating looks possible, and XRF is only an estimate
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Moderator
 United States
96451 Posts |
It looks plated to me as well
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Pillar of the Community
United States
2824 Posts |
Make me think of the Henning counterfeits but it's not one wrong year and way to crisp and I remember there was supposedly a transitional non silver War Nickel as well it might of been this year. |
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Bedrock of the Community
United States
74346 Posts |
Something looks off. It might be plated.
Errers and Varietys.
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Pillar of the Community
 United States
6525 Posts |
Can you post a picture of the edge? It looks like a different color peeking through in the magnet image.
The overall blurry and super shiny quality of the surface does make it look plated. If it were, the XRF machine would probably read the surface composition plus a depth of metal underneath.
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Pillar of the Community
United States
1502 Posts |
Most likely plated if it is magnetic. The XRF readout is a good indicator of plating given the high Nickel levels. Most XRFs can only penetrate a few micrometers.
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Valued Member
United States
98 Posts |
I am open to all responses and answers offered and appreciate all who take time to do so. In the instance of plating, how would this show the high concentration of nickel content, and why would anyone plate a wartime nickels with nickel in the first place knowing that wartime nickels had 0% Nickel content? If the XRF scan is not adequate, what are my options to determine true composition? If f such a thick plating of nickel were added, would that not have any effect on the weight of the coin? People keep saying the same things but without any explanations based on facts presented.
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Pillar of the Community
United States
1502 Posts |
A circulated coin's weight over time obviously drops and with standard Nickel plating only somewhere around 15 microns thick, I would not focus on weight. As plating occurs on the surface, magnetism if Nickel. Is it only slightly magetic (like a magnet can pick it up) or does the coin jump onto the magnet? I believe a Nickel/Copper alloy has to have around 70% Nickel to show true ferromagnetic properties. As XRF only penetrates so far - depending on strength of beam and density of metal - your results are skewed towards what is on the surface. Research the model of XRF used, they should publish depth specs. If it is plated there is only one person that can tell you why. Maybe someone trying to alter the coin to fit the Copper/Nickel Transitional Planchet error? I just went thru a very similar scenario with a 1943-P that is magnetic with a non-spec XRF readout. In my case there is no plausible explanation for the coin to be magnetic. At least yours has Nickel content - http://goccf.com/t/452152#3907675Edited by DOCC
10/21/2023 06:53 am
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Valued Member
United States
98 Posts |
@DOCC thank you very much, this is greatly appreciated and I will do exactly as recommended! And thank you to all that took the time to read and/or comment. @CoinFrog I had sold 7 Mercury dimes to this shop that was all. |
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Valued Member
United States
98 Posts |
@DOCC Very interesting post, and you were correct on the original composition passed by Congress. Yours does still have trace iron content which may explain the magnetism.
Yours I could be led to believe to be an early test planchet from between March 1942 and whenever the 56Cu/35Ag/9Mn was decided, have you checked for 1943/2?
Mine bothers me most because the entire point was 0% Nickel which forces me to accept plating as the most likely though disappointing answer.
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Pillar of the Community
United States
1502 Posts |
Look at it this way, take the Nickel, Iron, and Manganese out of the equation. You have 32 copper and 18 silver - that is very close to specs 32/50=64% CU, 18/50=36% AG. Now assume the XRF read 20 microns deep and the Nickel plating is 10 microns deep (the 20 microns of read depth is your 100% on the XRF readout). 50% of the 20 microns is Nickel and then close to specs for the next 10 microns. I'm probably oversimplifying but point made.
The iron content is too insignificant to cause magnetism in my scenario.
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Pillar of the Community
United States
2738 Posts |
This wartime nickel appears to have been plated with pure, elemental nickel. That would create a weak attraction to a magnet.
Error coin writer and researcher.
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Pillar of the Community
United States
738 Posts |
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Replies: 18 / Views: 2,341 |
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Posted 10/20/2023 5:25 pm
