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<p>[QUOTE=&quot;buddy16cat, post: 1540239, member: 37356&quot;]I realize it has been discussed many times on what causes coins to tone and I understand why since the type of toning makes the coin more desirable.&nbsp; I do have a matron head large cent that is black, I am thinking it hasn&#039;t been altered like many coins that age.&nbsp; I also have silver roosies that are black as well.&nbsp; It would seem that an air-tight container would prevent toning rather than the coin being left out in the air.&nbsp; I have noticed changes in toning in coins I bought a few months ago.&nbsp; Has anyone noticed that some coins tone a different color than others?&nbsp; All of my standing quarters are gold toned.&nbsp; Maybe the coins that are exposed to the air tone faster than those that are not like those in an a slab, air-tight, or 2X2. I am going to try that with this polished coin I got at melt that is white-faced.&nbsp; I realize that whatever I do the cleaning can&#039;t be undone but toning can cover the affects of it.[/QUOTE]</p><p><br /></p>

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