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<p>[QUOTE=&quot;CHAMELEON, post: 726343, member: 11032&quot;]I&#039;ve never seen any AT coin change with my test, or over any length of time. Almost all of the AT coins that have been slabbed have color because someone applied something on the surfaces of the coin, or treated the coin with something and changed the environment of the coin in a way that would create a reaction to the treated area of the coin. Whatever is done to the surface, or the manipulated reaction that adds color to the coin is not the same as the ionization of the molecules of the metal. The molecules in the metal of an ionized coin are not completely stable until the toning turns black, but the colors seen on an AT coin are the result of a competed chemical reaction and therefor do not change. There is one known way of artificially toning silver coins in which the actual molecules of the metal are really ionized, but the overall look of a coin that this has been to is usually noticeably different than an originally toned coin. I can&#039;t think of seeing any of these coins in holders, so they are not really any issue. I&#039;d love to see before &amp; after pictures of any AT coins that have changed if you can provide any. I have been proven wrong before, and I am welcome to being proved wrong again. That&#039;s how we learn, right? I&#039;m pretty certain that I am right in this case though.[/QUOTE]</p><p><br /></p>

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