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<p>[QUOTE=&quot;Insider, post: 5009372, member: 24314&quot;]Old authentication diagnostic shorthand term from 1970&#039;s.&nbsp; I got to make up all sorts of terms to describe characteristics we saw in coins.&nbsp; Most numismatists have never heard of them.&nbsp; EM: Extra Metal = shorthand for &quot;<span style="color: #b30000">extraneous metal</span>.&quot;&nbsp; </p><p><br /></p><p>It is <b>usually</b> something like raised lumps on the coin that does not belong there.&nbsp; In this case the EM is from die rust.&nbsp; It is all over the inside of the shield on the &quot;red&quot; copper.&nbsp; So when writing up a description of that die for my records I would include EM inside shield, large lump mid-bottom of vertical, etc. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie2" alt=";)" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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