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<p>[QUOTE=&quot;alurid, post: 8172628, member: 81991&quot;]I think the general consensus is that the lines on you coin are cause by the rollers that are employed to make the sheet of zinc the correct thickness before blanks are punched out of it.&nbsp; Zinc is a soft metal and easily marred if the rollers are not smooth.&nbsp; Some say these lines appear after the coin is struck and aged due to some reaction with the zinc under the plating and call them Linear plating blisters.</p><p>It may be a bit of both.[/QUOTE]</p><p><br /></p>

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