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<p>[QUOTE=&quot;cdcda, post: 44524, member: 941&quot;]A &quot;toned&quot; coin is one whose surface has been altered, by time and natural exposure to the elements, or artificially by exposure to certain chemicals. Since coins differ in their composition, they are also going to differ in the ways in which they can acquire &quot;tone.&quot;</p><p><br /></p><p>Silver Morgan Dollars for instance will often acquire a beautiful golden hue over time. Others will showcase a cartwheel or yellows, blues, and reds. Eventually, with enough exposure to the elements, silver dollars will turn a dark grey or black - as will almost any silver.</p><p><br /></p><p>The toning that usually naturally occurs on Morgan Dollars and other silver coins, is caused by exposure to air. If you were to bury a Morgan Dollar in the ground, you might end up with different &quot;toning&quot; - say a dark black or purple color.</p><p><br /></p><p>Since Lincoln Cents do not have the same composition as Morgan Dollars ;-) they do not tone in the same fashion. Cents will usually turn from their original bright red to a dark brown color with exposure to air. At times, as in the cause of the coin in the lower right, they can also turn a shade of red.</p><p><br /></p><p>The blue-green on some of the coins noted is still toning/patina, in that it is a chemical alteration of the coins surface due to natural or artificial exposure to certain elements, but in this case it is particularly unattractive - and also damaging. If the surface of the coins are not stablized, eventually major corrosion will occur.</p><p><br /></p><p>So, personally, I would call all of these coins toned since they do not exhibit their original brilliant red color. Most appear to have turned the normal brown color you would expect, while a couple of taken on a more reddish hue that is not that unusual. </p><p><br /></p><p>Four of the coins show signs of a damaging chemical reaction on their surface and where they valuable, this would have to be stopped before they were more seriously damaged. A few of them also show signs of damage already.[/QUOTE]</p><p><br /></p>

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