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<p>[QUOTE=&quot;19Lyds, post: 2930358, member: 15929&quot;]The clips shown in the photo&#039;s are NOT valid clips but PM alterations IMO.</p><p><br /></p><p>Understanding the gang punch operation is critical in determining the authenticity of a curved clip (concave) on a CnClad coin.</p><p><br /></p><p>Since the blank is gang punched from a CnClad strip, the cladding is forced up over the edge of the blank. This is what accounts for the half copper/half clad edges on these coins.</p><p><br /></p><p>If you address the CnClad <b><i>strip</i></b> as Top and Bottom, as the punch gets forced onto the top of the strip, the top cladding gets stretched over the edge of the bottom of the blank while the strip itself gets the cladding stretched over the top of the hole.</p><p><br /></p><p>What this means is that the <b><i>blanks</i></b> will be the exact opposite of the <b><i>holes</i></b> in the strip.</p><p><br /></p><p>So, looking directly at the clip from the edge, the cladding will be opposite since the clip represents the hole left from the previous gang punch. There is no specific coin orientation for this anomaly since the orientation of the blanks, as they are fed into the press, is not controlled meaning, the top of the blank may not be the Obverse of the coin.</p><p><br /></p><p>[ATTACH=full]711379[/ATTACH] </p><p><br /></p><p>The OP&#039;s images clearly show a full copper core which means that the missing area of the coin was ground off as indicated by the horizontal scrapes inside the clipped area.</p><p><br /></p><p>[ATTACH=full]711386[/ATTACH] </p><p><br /></p><p>[ATTACH=full]711387[/ATTACH] </p><p><br /></p><p>Exceptions to the above diagnostic would be with the straight clip and the elliptical clip. The straight clip <i>could</i> show a thin strip of cladding on the top and the bottom of the straight clipped area depending upon how the strip was manufactured and where on the strip the blank was punched. (i.e. top or leading edge of the strip or from the side of the strip) This would be because no gang punching was involved and the cladding is undisturbed from its original manufacture. The elliptical clip (convex) would also not reflect this diagnostic since the elliptical clip is NOT the result of the gang punching operation.</p><p><br /></p><p>A more detailed explanation was in a Coin World Collectors Clearinghouse article of June 29, 2005 page 50. PM Me and I&#039;ll share a scan of the page which was authored by Mike Diamond.[/QUOTE]</p><p><br /></p>

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