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<p>[QUOTE=&quot;19Lyds, post: 2149696, member: 15929&quot;]The &quot;Blakeslee Effect&quot; is not necessarily a reliable indicator of the validity of a clip as some coins are in fact valid clips with absolutely no indication of the Blakeslee Effect.</p><p><br /></p><p>What the Blakeslee Effect amounts to is when blanks are &quot;rolled&quot; through the upsetting mill to create the raised rim, they are rolled through a decreasing radius path which essentially &quot;squeezes&quot; the bank and creates the raised rim.</p><p><br /></p><p>When the blank is incomplete or not &quot;round&quot;, no &quot;squeezing&quot; can occur and as such the rim &quot;opposite&quot; the incomplete area will not be raised. Blanks with raised rims (which are now planchets once the rim is applied) are a smidge smaller than blanks without the raised rim.</p><p><br /></p><p>So, the Blakeslee Effect can appears to be a slight &quot;bulge&quot; opposite the clip or simply an aberration in the coins rim. Some are huge and some are not.</p><p><br /></p><p>The best example I can find right now is a disruption of the rim on the straight clip.</p><p><br /></p><p>[ATTACH=full]412380[/ATTACH]</p><p><br /></p><p>Note that opposite the clipped area, the rim of the coin is not fully formed.</p><p><br /></p><p>The Blakeslee Effect on the Washington below makes the coin look almost deformed and typically speaking, the smaller the coin and the higher the rim, the greater the effect.</p><p><br /></p><p>[ATTACH=full]412383[/ATTACH]</p><p><br /></p><p>Presidential and Sacagawea Dollars (I/e/ Golden Dollars) have a very wide rim which does not get &quot;upset&quot; in a significant amount. Ever try stacking Presidential Dollars. They slide right off of each simply because the rim is just not that high on these coins. As such, golden dollar &quot;type&quot; coins may not show any Blakeslee effect at all.</p><p><br /></p><p>I do not have any examples of this.[/QUOTE]</p><p><br /></p>

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