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Possible contemporary fouree or modern Attica imitation tetradrachm?
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<p>[QUOTE="Lolli, post: 4622491, member: 96900"]Fresh punch marks are supposed to be sharp and I think that they are not completely sharp anymore so they were most likely already on the mother. Did you look for other coins from this dies? Maybe you will find the mother? It could be the that the cast was not made of pure silver and that the metals of alloy were not perfectly mixed or impurities in Silver, even on the same coin the metal alloy is not always everywhere 100% identical but almost. It would be very interesting if there is really copper under a Silver plating, on your cast (some modern fakes are silver plated fourees to make them more deceptive).</p><p><br /></p><p>Lipanoff Macer, modern hand cut dies, exist in Silver and as fouree with copper core and silver plating</p><p><br /></p><p><a href="https://www.acsearch.info/search.html?id=759278" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.acsearch.info/search.html?id=759278" rel="nofollow">https://www.acsearch.info/search.html?id=759278</a></p><p><br /></p><p>In Silver withdrawn as modern fake</p><p><br /></p><p><a href="https://www.acsearch.info/search.html?id=2506823" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.acsearch.info/search.html?id=2506823" rel="nofollow">https://www.acsearch.info/search.html?id=2506823</a></p><p><br /></p><p>The black toning could be hydrogen sulfide. "Silver becomes black because of hydrogen sulfide (sulfur), a substance that occurs in the air."</p><p><br /></p><p><a href="https://www.inesbouwen.com/en/why-does-silver-turn-black-or-green/" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.inesbouwen.com/en/why-does-silver-turn-black-or-green/" rel="nofollow">https://www.inesbouwen.com/en/why-does-silver-turn-black-or-green/</a></p><p> </p><p>You can test if your coin is made of pure silver or not. Silver, Copper and and other metals have different density . 1 gram Gold is smaller (size/volume) than 1 gram silver and 1 gram Silver is smaller (size/volume) than one gram Copper (size/volume). You can put something with pure silver in a bath with identical weight as your coin and then your coin and then calculating how much water went out of the bath for the one with pure silver and then for your coin. And so calculating the purity of your silver. Or you make a XRF analysor test, can only analyse the surface and not what is under surface but it can tell you the alloy composition of the surface metal of your cast. In Germany the stores who buy Gold have XRF analysor, I do not know how it will be in USA, you can go there telling them you want to sell , then they will test the silver or asking them if they would test it for free or little money for you.</p><p><br /></p><p><a href="https://www.longlongtimeago.com/onc...the-story-of-archimedes-and-the-golden-crown/" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.longlongtimeago.com/onc...the-story-of-archimedes-and-the-golden-crown/" rel="nofollow">https://www.longlongtimeago.com/onc...the-story-of-archimedes-and-the-golden-crown/</a>[/QUOTE]</p><p><br /></p>
[QUOTE="Lolli, post: 4622491, member: 96900"]Fresh punch marks are supposed to be sharp and I think that they are not completely sharp anymore so they were most likely already on the mother. Did you look for other coins from this dies? Maybe you will find the mother? It could be the that the cast was not made of pure silver and that the metals of alloy were not perfectly mixed or impurities in Silver, even on the same coin the metal alloy is not always everywhere 100% identical but almost. It would be very interesting if there is really copper under a Silver plating, on your cast (some modern fakes are silver plated fourees to make them more deceptive). Lipanoff Macer, modern hand cut dies, exist in Silver and as fouree with copper core and silver plating [URL]https://www.acsearch.info/search.html?id=759278[/URL] In Silver withdrawn as modern fake [URL]https://www.acsearch.info/search.html?id=2506823[/URL] The black toning could be hydrogen sulfide. "Silver becomes black because of hydrogen sulfide (sulfur), a substance that occurs in the air." [URL]https://www.inesbouwen.com/en/why-does-silver-turn-black-or-green/[/URL] You can test if your coin is made of pure silver or not. Silver, Copper and and other metals have different density . 1 gram Gold is smaller (size/volume) than 1 gram silver and 1 gram Silver is smaller (size/volume) than one gram Copper (size/volume). You can put something with pure silver in a bath with identical weight as your coin and then your coin and then calculating how much water went out of the bath for the one with pure silver and then for your coin. And so calculating the purity of your silver. Or you make a XRF analysor test, can only analyse the surface and not what is under surface but it can tell you the alloy composition of the surface metal of your cast. In Germany the stores who buy Gold have XRF analysor, I do not know how it will be in USA, you can go there telling them you want to sell , then they will test the silver or asking them if they would test it for free or little money for you. [URL]https://www.longlongtimeago.com/onc...the-story-of-archimedes-and-the-golden-crown/[/URL][/QUOTE]
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Possible contemporary fouree or modern Attica imitation tetradrachm?
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