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Trajan coin authentic or cast?
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<p>[QUOTE="Oldhoopster, post: 3106152, member: 84179"]I'm am by no means an expert in ancients but I have a few and have looked at a lot of coins over the years. When I first saw your pics, I said "looks good to me, what do the experts think".</p><p><br /></p><p>Regarding your Iron question. As other have stated, ancient metallurgy was hardly an exact science. Who knows what could have been in the melt. Who knows the composition of the ore body. And who knows how much recycled silver/metal vs ore was used. IMO, what I would want to look for are trace elements that were not available to the Romans in metallic form to prove it was a modern fake, and Fe isn't one of them. Do you have some V, Co or Cr that would indicate a modern steel got into the melt. In addition, XRF only tells you how much Fe is in the sample, not the composition. Is it Fe2O3 or Fe3O4 or metallic Fe? And XRF only measure the surface composition, not the entire coin.</p><p><br /></p><p>I can't see the edge marks but taking your word they are present and appear to be recent, could it not have been dropped, or somebody tried to doctor a rough edge. Maybe this is a legitimate reason to request a return, but I think that's pushing it.</p><p><br /></p><p>You received opinions from some very respected and credible ancient experts saying it's authentic. There are also a lot of questions regarding the Fe in the composition and you've shown nothing to indicate it came from a modern steel source. I understand if you have buyers remorse, but don't try to blame it on the composition. Just my opinion[/QUOTE]</p><p><br /></p>
[QUOTE="Oldhoopster, post: 3106152, member: 84179"]I'm am by no means an expert in ancients but I have a few and have looked at a lot of coins over the years. When I first saw your pics, I said "looks good to me, what do the experts think". Regarding your Iron question. As other have stated, ancient metallurgy was hardly an exact science. Who knows what could have been in the melt. Who knows the composition of the ore body. And who knows how much recycled silver/metal vs ore was used. IMO, what I would want to look for are trace elements that were not available to the Romans in metallic form to prove it was a modern fake, and Fe isn't one of them. Do you have some V, Co or Cr that would indicate a modern steel got into the melt. In addition, XRF only tells you how much Fe is in the sample, not the composition. Is it Fe2O3 or Fe3O4 or metallic Fe? And XRF only measure the surface composition, not the entire coin. I can't see the edge marks but taking your word they are present and appear to be recent, could it not have been dropped, or somebody tried to doctor a rough edge. Maybe this is a legitimate reason to request a return, but I think that's pushing it. You received opinions from some very respected and credible ancient experts saying it's authentic. There are also a lot of questions regarding the Fe in the composition and you've shown nothing to indicate it came from a modern steel source. I understand if you have buyers remorse, but don't try to blame it on the composition. Just my opinion[/QUOTE]
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Trajan coin authentic or cast?
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