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Detecting Counterfeit American Gold and Silver Eagles?
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<p>[QUOTE="InfleXion, post: 1464485, member: 29012"]Eagles are a great coin to pick up for the very reason that you can have certainty with counterfeit testing unlike coins or bars that do not have precisely known dimensions. </p><p><br /></p><p>That being said, you will need to perform a number of tests successfully in order to ascertain that. It must pass all of the following 4 tests: weight, diameter, height, and specific gravity, AND it must then also pass either the ice melt test (silver is the most heat conductive metal) or the rare earth magnet test (silver has just enough magnetivity to slow down a super strong magnet sliding down the coin at an incline) to prove that your first 4 tests weren't duped by an alloy mix. I'm not sure what you'd have to do with gold to discount the possibility of an alloy mix though, only silver.. but the right mixture of other metals can fool the first 4 tests so those are not the end of the line. </p><p><br /></p><p>Or you could just drill it or acid test if you don't care about damaging the coin, or else get a super expensive x-ray gun.[/QUOTE]</p><p><br /></p>
[QUOTE="InfleXion, post: 1464485, member: 29012"]Eagles are a great coin to pick up for the very reason that you can have certainty with counterfeit testing unlike coins or bars that do not have precisely known dimensions. That being said, you will need to perform a number of tests successfully in order to ascertain that. It must pass all of the following 4 tests: weight, diameter, height, and specific gravity, AND it must then also pass either the ice melt test (silver is the most heat conductive metal) or the rare earth magnet test (silver has just enough magnetivity to slow down a super strong magnet sliding down the coin at an incline) to prove that your first 4 tests weren't duped by an alloy mix. I'm not sure what you'd have to do with gold to discount the possibility of an alloy mix though, only silver.. but the right mixture of other metals can fool the first 4 tests so those are not the end of the line. Or you could just drill it or acid test if you don't care about damaging the coin, or else get a super expensive x-ray gun.[/QUOTE]
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Detecting Counterfeit American Gold and Silver Eagles?
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