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 Replies: 20 / Views: 16,514 |
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Bedrock of the Community
United States
17884 Posts |
If it was actually missing both clad layers the weight would be closer to 4 grams.
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Pillar of the Community
United States
3345 Posts |
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Bedrock of the Community
United States
10045 Posts |
Nickel and Copper are very close in density, so weight doesn't help distinguish between solid copper and plated--all else being equal. Conversely, if a planchet was struck from stock that somehow wasn't properly clad, but of the correct thickness--it would weigh the same as normal. Just thinking aloud here--I'm unsure how this could be verified non-destructively.
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Pillar of the Community
United States
880 Posts |
Take a pair of snips to it :) You'll quickly find out if it's full copper.
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Pillar of the Community
United States
584 Posts |
What about running a current through it, would a full copper conduct x-+ amount of electricity than a regular Washington quarter. Or a water test might help, actually DVcollector says their about the same density so that wouldn't work. IDK looks nice though. Good Luck |
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Pillar of the Community
 United States
4618 Posts |
The coin doesn't seem to have any luster or wear. It should have one or the other. I had a quarter that was missing the obverse clad layer and the copper, although Brown, still had almost full luster. I also had a Dime with the obverse clad layer missing, but it was Red/Brown. The color on the OP's coin doen't look even. I'm attaching a photos of both of my coins to compare the color and luster. Do you have a photo taken strait above the coin? I really hope it is all copper, because I love new error types, but the look seems wrong.   ANA ID: 3203813 - CONECA ID: N-5637 Clean a coin that may be worth collecting? Please DON'T! When in doubt, leave it dirty!! 
Edited by Yokozuna
07/05/2011 03:20 am
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Bedrock of the Community
United States
17884 Posts |
Quote:
read this-your quarter should 4.7 grams if it is really missing the layer. That 4.7 gram figure is for a coin missing ONE layer, the OP coin claims to be missing both layers so as I said closer to 4 grams. Quote:
Conversely, if a planchet was struck from stock that somehow wasn't properly clad, but of the correct thickness--it would weigh the same as normal. Correct but where would such a planchet come from? I'm sure the mint would notice a coil of solid copper strip labeled as quarter stock when they went to put it into the blanking press. Of course they could put cent strip into the quarter blanking press but then once again the blanks would be light weight. I would try a metal detector. They work by the use of a tuned circuit. The coil puts out a magnetic field which, when distorted by a metal object, results in a change in frequency in the tuned circuit. Copper is now resistive to the passage of a magnetic field than nickel is and therefor distorts the coil field more. (A thin copper plating on a regular clad coin should not significantly alter the signal of a clad quarter, but a solid copper coin should be noticeably different. |
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Bedrock of the Community
United States
20753 Posts |
Quote:
Take a pair of snips to it :) You'll quickly find out if it's full copper.
Or arc welders brazing torch.  And oh one more thing  Since you weiged it at approximately 5.625G and a normal, no wear clad quarter should be 5.67G, that to me would indicate a plated quarter. Since yours has wear it should really have been less than mormal wieght. If it was missing one layer would be 4.7G and much less if missing both layers. Now if it was Gold plated it would make up for the wear since Gold is heavier. If so, at the present price of Gold, your rich. Otherwise you have a coin that has been played with and is still worth $0.25 approximately. Edited by just carl
07/05/2011 12:02 pm
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Pillar of the Community
United States
648 Posts |
Quote:
(A thin copper plating on a regular clad coin should not significantly alter the signal of a clad quarter, but a solid copper coin should be noticeably different. Agree plating on top of clad should have minimal effect on metal detector ? biggfredd may know !  Quote:
Quote:
Take a pair of snips to it :) You'll quickly find out if it's full copper. doubling error :) Quote:
Or arc welders brazing torch. puddling error ;) |
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Pillar of the Community
United States
4618 Posts |
My metal detector shows me what coin is buried. It shows Dollar, Half, Quarter, Dime, Nickel, Cent and Zinc Cent. It may show the denomination of a gold piece, but I've never had a hit on one. I wonder what reading it would give on a copper Quarter. I sold the Quarter above, or I would test it to see what the detector thought it was.
ANA ID: 3203813 - CONECA ID: N-5637 Clean a coin that may be worth collecting? Please DON'T! When in doubt, leave it dirty!!
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New Member
 United States
6 Posts |
Ok, there seem to be two possibilities:
It is just a circulated coin that was plated after it was worn (or else the plating would be worn off)
Or it was a planchet of solid copper stuck in the bin, or something ,that was stamped.
Most seem to think it was plated because the other option would be very rare. It's very unlikely but entirely possible, no ?
So ... doesn't someone know someone who would know how to tell for sure if it is or is not copper ? It can't be that hard !
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Pillar of the Community
United States
648 Posts |
nondestructive testing is what you want.x ray fluorescence should do the trick! find a materials testing lab in your area. High end welding inspectors have them.
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Bedrock of the Community
United States
10045 Posts |
If the coin was plated, I'm not sure if XRF can get beyond surface to reveal the composition?  If plated, I imagine this would affect surface details, and there might be some clear evidence on the edge that an expert's eyes could detect? |
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Pillar of the Community
United States
1424 Posts |
maybe it's the pictures or my computer monitor but it doesn't look like solid copper to me. It looks more like the stained/discolored quarters I dig up when I go metal detecting.
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New Member
United States
6 Posts |
Someone on another post suggested that it be graded/slabbed. Any idea what that is and where it can be done ?
Picture color not quite accurate ... looks exactly like 30 yr old copper pipe color. It's darkened over the years.
It appears that if it's not plated it is worth quite a bit (whatever that means) so ... "if it's too good to be true .....
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Replies: 20 / Views: 16,514 |
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Posted 07/04/2011 4:11 pm
