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<p>[QUOTE=&quot;desertgem, post: 4604528, member: 15199&quot;]I have shown these photos I took several years ago&nbsp; to demonstrate surfaces in a thread about Morgans vs Peace in toning ability and it also applies to &quot;wagonwheel effects&quot; . The Morgan is on the left and became PCGS64, the Peace on right became MS65. Both at a magnification of 100X ( Scientific,&nbsp; Not USB definition). You can see the sharper peaks ( ridges on the Morgan than the Peace) that is why the untoned Morgans reflect/refract light more and when rotated flash light at different directions ( wagonwheel effet) . They can become slightly corroded and the silver compounds ( colored) can now exhibit a Toned appearance which varies by the chemicals and thickness.&nbsp; So over time the toned layer becomes thicker ( if dark and thick)-&gt; ugly to most, if &#039;perfect thickness&#039; and varied colors &gt; $$$. </p><p><br /></p><p>Now the Peace has shorter peaks so natural toning is flatter and less apparent, so natural toning is muted and lower refraction by the peaks, unless artificial means are used to enhance ( IMO) as people can disagree.</p><p><br /></p><p>Ok the bottom photo is the Morgan at 400X, so the ridges are more in alignment than the Peace. </p><p>&nbsp;&nbsp;&nbsp; So, when we dip, the product removes the surface layer . In chemistry it is Time X Concentration is directly related to the removal. A quick dip with a diluted substance such as an Acid, rinse to remove -&gt;done&nbsp; ( is best) . Repeated dips with full strength --&gt; bad, you can&#039;t put metal back on the coin, so once damaged it is as said &quot; Putting lipstick on a Pig&quot;&nbsp; If you &quot;Have-to&quot; dip, dilute the agent 1/10 and pull and check often.&nbsp; rinsing each time. Remember you can&#039;t undo a coin.</p><p><br /></p><p>Jim</p><p>[ATTACH=full]1140459[/ATTACH] [ATTACH=full]1140460[/ATTACH][/QUOTE]</p><p><br /></p>

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