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<p>[QUOTE=&quot;JCro57, post: 3167179, member: 92083&quot;]I have read conflicting reports on exactly how the thin copper layer is aplied to the zinc core. </p><p><br /></p><p>A couple sites say they are microplated <a href="https://www.comsol.com/blogs/electroplating-u-s-mint-makes-penny/" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.comsol.com/blogs/electroplating-u-s-mint-makes-penny/" rel="nofollow">https://www.comsol.com/blogs/electroplating-u-s-mint-makes-penny/</a></p><p><br /></p><p><br /></p><p>Yet on error-ref.com it says they are given a copper bath. </p><p><a href="http://www.error-ref.com/incomplete_plating/" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.error-ref.com/incomplete_plating/" rel="nofollow">http://www.error-ref.com/incomplete_plating/</a></p><p><br /></p><p>Is anyone 100% certain how they are plated?[/QUOTE]</p><p><br /></p>

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