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<p>[QUOTE=&quot;Dougmeister, post: 2055867, member: 56842&quot;][USER=41219]@furryfrog02[/USER], I did a search and supposedly you can try acoustic and/or specific gravity tests. Sounds like too much work, but hey, if you have some free time it sounds like fun:</p><p><br /></p><p>&quot;There is some guy on youtube who developed a simple test to distinguish canadian 1967 50% and 80% silver coins using a microphone and some freeware audio software (Audacity) to examine the sound frequencies produced when you bang the coin. The signatures for 50% and 80% silver coins are completely different and they are easy to tell apart.</p><p><br /></p><p>[MEDIA=youtube]qZdxf655fe4[/MEDIA]&quot;</p><p><br /></p><p>reference: <a href="https://gold-forum.kitco.com/archive/index.php?t-94183.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://gold-forum.kitco.com/archive/index.php?t-94183.html" rel="nofollow">https://gold-forum.kitco.com/archive/index.php?t-94183.html</a>[/QUOTE]</p><p><br /></p>

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