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<p>[QUOTE=&quot;desertgem, post: 7684035, member: 15199&quot;]True it is not a film, but it is different from being a flat surface. This is a Morgan dollar (MS) surface magnified 400X , with a &#039;real&#039; microscope , not a USB type. What you see are not seen with the bare human eye, even with a 30X&nbsp; loupe. They are caused by reverse indentations caused by finishing the coin die, so they are roughly triangular.&nbsp; This is what causes the &quot;spinning wheels&quot; effect when you tilt a Morgan back and forth.&nbsp;&nbsp; Also for people interested in toning, they also serve as refraction devices for the different wavelength of colors caused by chemical reaction. </p><p>&nbsp;&nbsp;&nbsp; If friction, wear, &quot;restoring&quot; wears down the peaks, the above characteristics will be reduced or disappear. the peaks are what are being called as &quot;film&quot;</p><p><br /></p><p>[ATTACH=full]1319548[/ATTACH]</p><p><br /></p><p>On the Peace dollars,&nbsp; the finishing process produced very small ridges, so maybe a finer grit . You can see the difference below. This is the surface of a Morgan on left&nbsp; and a Peace on the right @100X. </p><p><br /></p><p>[ATTACH=full]1319560[/ATTACH]</p><p><br /></p><p>The difference makes the &quot;wheels&quot; and toning effects less. IMO, Jim[/QUOTE]</p><p><br /></p>

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