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<p>[QUOTE=&quot;GDJMSP, post: 2896074, member: 112&quot;]As Dave said, the entire coin has been dipped, and freshly dipped coins are especially susceptible to toning. The only time a coin is more susceptible to toning is when it is freshly minted.</p><p><br /></p><p>The areas that were dark on the coin are the areas that the least susceptible to toning now. This is because some small amount of toning still exist there, and because those areas have the least amount of luster.</p><p><br /></p><p>You see, some of the luster on the coin has already been destroyed, or lessened if you prefer, by the toning itself. That&#039;s what toning has done by the time it turns black. And if allowed to progress far enough, eventually it will destroy all luster until none remains.</p><p><br /></p><p>I suspect the entire coin had a good deal more heavy black toning on it at one point, before CBD ever obtained the coin. And it&#039;s previous owner, or one of them, dipped the coin then. But, they didn&#039;t get all of the black off the coin - and that&#039;s the way it was when CBD got it.</p><p><br /></p><p>The entire scenario would go like this. The coin was allowed to tone until the toning became heavy and very dark - black even. In those areas that were black a certain amount of the toning was lessened or destroyed. Then the coin was dipped, again before CBD got the coin. Then CBD dipped the coin, twice. Both of those dips removed additional luster. Then CBD treated the dark areas only with more dip to lighten the color (remove more toning) even more. </p><p><br /></p><p>This means that the central areas of the coin, the areas that we saw as black in the first pics, have had more luster removed from them than the rest of the coin. And because of that, and because there is still a small amount of toning there, those areas will tone less, and more slowly than the rest of the coin.[/QUOTE]</p><p><br /></p>

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