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<p>[QUOTE=&quot;GDJMSP, post: 1498308, member: 112&quot;]Believe me, they would love to if they could - but they can&#039;t. The reason they can&#039;t is because so many forms of AT are caused by the same identical chemical reactions that cause NT. So it is physically impossible to tell one from the other.</p><p><br /></p><p>You see all forms of natural toning are caused by gasses in the air. And gasses leave no trace of a substance behind on the coin. And natural toning can take anywhere from a few days to occur to decades to occur. There is no specific time limit, conditions merely have to be right for it to happen.</p><p><br /></p><p>The exact same thing happens with many forms of artificial toning, only it typically happens much faster because the coin is exposed to the very same gasses that cause natural toning, only the gasses are concentrated, sometimes in a confined area, so the toning can occur in a few hours or a day.</p><p><br /></p><p>Now if somebody tries to artificially tone a coin by pouring liquid chemicals on the coin, or puts the coin into direct contact with a substance, that will leave physical traces of that chemical or substance behind on the coin. Those traces can be detected and the AT confirmed. It also usually results in toning with a specific kind of look and with experience all you have to do is look at a coin to see that. </p><p><br /></p><p>But this type of artificial toning is not what people worry about because it is easy to detect. You can even say it is obvious. Problem is it is not obvious to everybody and many people without experience are fooled by it. But the TPGs and experienced collectors and dealers are not fooled by it.[/QUOTE]</p><p><br /></p>

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