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<p>[QUOTE=&quot;Burton Strauss III, post: 3453723, member: 59677&quot;]8 microns is 0.000315 inches not 0.003... I&#039;ll accept that...</p><p><br /></p><p>The problem is the math doesn&#039;t work. The core is 99.2% zinc in 0.8% copper, but the entire coin is described as 97.5% zink 2.5% copper.</p><p><br /></p><p>This from ats calculates the weight as 0.0251g -&nbsp; <a href="https://www.coincommunity.com/forum/topic.asp?TOPIC_ID=291160" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.coincommunity.com/forum/topic.asp?TOPIC_ID=291160" rel="nofollow">https://www.coincommunity.com/forum/topic.asp?TOPIC_ID=291160</a></p><p><br /></p><p>Subtract the 0.251g from the 2.5g nominal weight gives 2.4749g at the 99.2%/0.8% or 2.4551g and 0.0198g. Add back the 0.0251g and calculate the resulting percentages gives 98.2% zinc and 1.8% copper not 97.5%/2.5%</p><p><br /></p><p>In order for those #s to be correct, the plating would need to be about 67% thicker or just over 13 microns...[/QUOTE]</p><p><br /></p>

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