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<p>[QUOTE=&quot;Conder101, post: 2142893, member: 66&quot;]From the description it definitely sounds like a heat related gas bulge.</p><p><br /></p><p>If something was actually trapped between the copper and the clad layer it would not form a bulge on the coin because one it would be crushed by the rollers that rolled out the strip, and two it would be crushed by the striking of the dies.</p><p><br /></p><p>If it was something strong enough to NOT be crushed by the rollers it also would not pass through them and would tear a hole in the strip.&nbsp; If by some miracle you could have something &quot;uncrushable&quot; in the planchet when it was struck the object would keep the dies from coming together and the rest of the coin would not be struck. (image from the dies just on the lump and the rest of the coin would still be a &quot;blank planchet&quot;.[/QUOTE]</p><p><br /></p>

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