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<p>[QUOTE=&quot;Insider, post: 2989377, member: 24314&quot;]Easy(for many of us)! </p><p><br /></p><p>1. Put an incandescent lamp on a table.&nbsp; Turn out the other lights and close the blinds/drapes so the room gets as dark as you can get it.</p><p><br /></p><p>2. Take out 2-3 of the highest TPGS graded gold coins you have for each denomination.&nbsp; Examine them as I wrote below in <span style="color: #ff0000">#5.</span>&nbsp; Ignore the reflection from the plastic.</p><p><br /></p><p>3. Now take an ungraded coin and compare the color of the ones in the slab.</p><p><br /></p><p>4. Next, examine the raw coin using 5-10X glass.&nbsp;&nbsp; Hold the glass next to your eye and bring the coin close until it is in focus. </p><p><br /></p><p><span style="color: #ff0000">5.&nbsp; Slowly turn the coin and tip it back and forth just a little at the same time you turn it through at least 240 degrees.</span></p><p><br /></p><p>You are looking for fine, shiny, PARALLEL hairlines.&nbsp; Very often, a cleaned coin will flash and change color the moment the parallel lines become horizontal to the position of the light.&nbsp; </p><p><br /></p><p>&nbsp;Let us know what happened.[/QUOTE]</p><p><br /></p>

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