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<p>[QUOTE=&quot;Lehigh96, post: 2118811, member: 15309&quot;]In my previous post, I clearly explained &quot;air transfer toning.&quot;&nbsp; Unless air has suddenly become a solid or liquid, then I am aware that toning is caused by gasses.&nbsp; Do you understand that the concentration of H2S that causes rainbow toning usually comes from a sulfur rich solid source?&nbsp; That is why the coins in the middle of the bag of Morgans don&#039;t tone but the ones in contact with the bag do tone.&nbsp; That is why coins in albums will develop rainbow toning while coins in 2x2 won&#039;t.</p><p><br /></p><p>Increasing the concentration of the gasses might speed up the process but with high levels of concentrated H2S, you wont be able to achieve a rainbow pattern, just monochromatic toning that covers the entire area of the exposed coin.</p><p><br /></p><p>Are you saying that all you need to do in order to recreate the look of a &quot;bag toned&quot; Morgan Dollar through artificial toning is simply increase the level of H2S that the coin is exposed to?[/QUOTE]</p><p><br /></p>

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