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<p>[QUOTE=&quot;Bart9349, post: 2505526, member: 5682&quot;]I found this floating on the internet:</p><p><br /></p><p><i>Abstract: Many tetradrachms of Alexandria have been assayed for their silver content but very few have been properly analyzed for the various components present in the alloys. Fourteen new gravimetric analyses are given of representative specimens ranging in date from the time of Claudius to the time of Aurelian. The silver content was found to range from 23.04% in the earliest coin to 1.43% in the latest. The principal component was copper, but small proportions of gold, tin, lead, iron, nickel, and zinc were present in all the coins. Various conclusions are drawn from the analytical data, including the probable composition of the copper used in the preparation of the alloys. -- AATA</i></p><p><i><br /></i></p><p><a href="http://www.bcin.ca/Interface/openbcin.cgi?submit=submit&amp;Chinkey=66668" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.bcin.ca/Interface/openbcin.cgi?submit=submit&amp;Chinkey=66668" rel="nofollow">http://www.bcin.ca/Interface/openbcin.cgi?submit=submit&amp;Chinkey=66668</a>[/QUOTE]</p><p><br /></p>

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