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<p>[QUOTE=&quot;wheelz, post: 24659617, member: 148512&quot;]Well, even a negative result is still a gut check.. However I don&#039;t think I get why at least the ones like this:</p><p><br /></p><p>[ATTACH=full]1571760[/ATTACH] </p><p><br /></p><p>are not an RPM. I understand that you get the &quot;shelf&quot; effect and that is not caused by an RPM or any kind of doubling. But I read somewhere that one way to tell the difference is these kind of notches where the red arrow is because the edge of the 2nd mark exceeds that of the lower &quot;shelf&quot;. Is it that yes, because they were punched manually most have some variation on multiple punches and it just isn&#039;t pronounced enough to be considered an RPM? To me this seems more pronounced with the notch than <a href="http://www.varietyvista.com/07%20Roosevelt%20Dimes/RPM%20Detail%20Files/1952DRPM003.htm" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.varietyvista.com/07%20Roosevelt%20Dimes/RPM%20Detail%20Files/1952DRPM003.htm" rel="nofollow">this one that is considered to be an RPM</a> (though this one is in much better condition). However I am just a newbie at this... I&#039;m just trying to understand what the difference is.[/QUOTE]</p><p><br /></p>

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