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<p>[QUOTE=&quot;dougsmit, post: 3137517, member: 19463&quot;]<a href="https://babel.hathitrust.org/cgi/pt?id=inu.30000104992965;view=1up;seq=7" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://babel.hathitrust.org/cgi/pt?id=inu.30000104992965;view=1up;seq=7" rel="nofollow">https://babel.hathitrust.org/cgi/pt?id=inu.30000104992965;view=1up;seq=7</a></p><p><br /></p><p>Before abusing your poor coin any more, read the standard reference of plated coins which has now been placed free online at the above address.&nbsp; I paid $50 for my copy and paper books are still available or those who do not like to read online.&nbsp;&nbsp; I consider it a great book.&nbsp; </p><p><br /></p><p>You can run all the tests you want on the coin but the only one that will reveal the interior is to cut it in half as Campbell shows in the book (great photos).&nbsp; Specific gravity will not tell you what a coin has inside but only an average of the alloy metals, corrosion and air pockets. Splashing acid on the surface and a notch as shown by Pawn Stars is a test to reveal base metal under relatively pure silver if you don&#039;t mind cutting that notch but will not tell much if the surface alloy is largely copper as well.&nbsp; The coin is not a high dollar item but IMO too nice to cut in half to show what is pretty obvious.&nbsp; Fourrees of various styles tend to degrade in predictable patterns of wear and corrosion.&nbsp; The Campbell book shows a number of styles. By the time of Septimius Severus, there was little enough silver in a real coin that it was not profitable to make the best fourree styles like foil and most countrfeits had very thin silver coatings that are very delicate and rarely survive even normal handling.&nbsp; High grade examples usually have bare patches showing copper and many are completely without remaining silver.&nbsp; Examination under a stereo microscope will make it clear which metal was on top. </p><p>[ATTACH=full]801405[/ATTACH][/QUOTE]</p><p><br /></p>

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