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<p>[QUOTE=&quot;desertgem, post: 1145155, member: 15199&quot;]Toning of coins depend on many factors, including time. Everything else aside, few coins since from before 1950, will still be blast white if openly stored. If stored in protective environment, this becomes prolonged, if stored in an area of the world where conditions are less likely to cause toning,( or corrosion if one wishes) , such as dry, little sulfur or acid components in the atmosphere, even less light and heat exposure. Remember that metals are more active at higher temperature and light conditions ( but this is a minority issue compare to the previous). A 10 year old silver ASE may show toning if has been allowed to set out in open air. </p><p><br /></p><p>If the coins you refer to , still have luster, protect them with the rest as best as you can, as there is little way to tell if they have been. dipped. </p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>

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