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<p>[QUOTE=&quot;Metalman, post: 38536, member: 1454&quot;]Suffice it to say that I have seen thousands of coins with this ruptureing of the outer layer,, it is not a true lamination error,where a small piece of dirt or grease is sandwhiched in between causing the outer layer to peel away,, it is usually small and situated to the edge of one of the design devices, most of the time the mint mark, but I have seen them by the motto either above or below, under magnification it appears like a tear in the outer layer, I think it is caused by the planchet either being to hot when struck or to cool, or being cooled to rapidly after striking</p><p><br /></p><p>When the coin is struck the metal being forced into the die is stretched while the metal of the field is compacted, this creates a place where the two meet at the base of the design device which would be weakened this is where the question is ,are the ones that exhibit this tear to hot when struck which could create a thinner layer at the base of the design device or is it the cooling process which causes rapid contraction the cause? or is it a combination of both ?[/QUOTE]</p><p><br /></p>

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