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<p>[QUOTE=&quot;BadThad, post: 2460768, member: 17261&quot;]Yes, when Zincoln is not struck with sufficient pressure, you can see those lines on the design high points. If you dig, you can probably find some past discussion on &quot;planchet lines&quot;. Here is a greaser I found - it was an excellent conversation piece. The lines give a nice look at the planchet characteristics:</p><p><br /></p><p>[ATTACH=full]515729[/ATTACH] [ATTACH=full]515730[/ATTACH] [ATTACH=full]515731[/ATTACH] [ATTACH=full]515732[/ATTACH] [ATTACH=full]515733[/ATTACH] </p><p><br /></p><p>I don&#039;t believe there are any alloy issues with Memorial cents. The memorial woodies are more like planchet impurities and none of them resembles anything like those from the 1920&#039;s.</p><p><br /></p><p>I believe the Memorial &quot;woody&quot; lines are from worn rollers in the planchet sheet rolling machines. It is my theory the rolling fluid used when making the sheets was garbage - full of suspended solids. As the machine rolled the sheets, the fine impurities got embedded into the rollers, damaged them and this gunk transferred into the planchets. Sheets are rolled through different levels back and forth until the desired thickness is obtained. The gunk stuck in the rollers impregnates the surface forming lines.</p><p><br /></p><p>As I recall [USER=1844]@Doug[/USER] stripped a one sided woody and you could still see faint traces of the lines? This implies it has depth, but not to the extent of a &quot;improper alloy&quot;.</p><p><br /></p><p>Happy 4th of July![/QUOTE]</p><p><br /></p>

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