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<p>[QUOTE=&quot;Insider, post: 2439489, member: 24314&quot;]Need close up of surface.&nbsp; I use a stereo microscope.&nbsp; Some sings to look for are:</p><p><br /></p><p>1. Breaks in the plating showing original surface.&nbsp; Usually found on the coin&#039;s rim.&nbsp; One trick is to plate the coin AFTER it was scratched so it looks the way your coin does.&nbsp; In that case you can tell by the way the scratch looks.</p><p><br /></p><p>2. Plating bubbles and pimples.</p><p><br /></p><p>3. Look for marks on the coin that are plated over.</p><p><br /></p><p>$. Sometimes Specific Gravity test works if the alloys are different.&nbsp; For example, silver and copper are very different.&nbsp; Nickel and copper are very close.[/QUOTE]</p><p><br /></p>

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