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<p>[QUOTE=&quot;desertgem, post: 24717102, member: 15199&quot;]The cartwheel effect is caused by light reflecting differently as the coin is tilted at different angles,,,,,,IF the reflecting area is raised high enough, Below are my photo of a Morgan on your left and a Peace Dollar on the right. Both were taken at same magnification 100X.</p><p>[ATTACH=full]1580573[/ATTACH]&nbsp; </p><p><br /></p><p>&nbsp;&nbsp;&nbsp; The Morgan has higher peaks and deeper valleys so light is reflected differently thus the cartwheel. The peace is almost flat, so different reflections angles will be of slight difference and thus will not produce much of a cartwheel effect if any. Normal pocket wear or surface corrosion will quickly reduce the height and thus no cartwheel. </p><p>&nbsp;&nbsp; &nbsp; Whizzing produces mountains , but usually more random heights and so there is no cartwheel, more just &quot;shiney&quot;. Below is a&nbsp; 400X of the Morgan to show the ridges of a &quot;never rubbed&quot; </p><p>[ATTACH=full]1580579[/ATTACH]</p><p>Thus the light reflection will be more like a searchlight (cartwheel).</p><p>This same idea also shows for the &quot;colored flashes&quot; toning from reactive chemicals as different . Chemically induced toning tends to produce more of a flat color and little to no flashing. IMO, Jim[/QUOTE]</p><p><br /></p>

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