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<p>[QUOTE=&quot;cladking, post: 8358719, member: 68&quot;]Some date clads are worse than others but most BU roll coins are OK.&nbsp; Ironically the &#039;82-P is one of the worst.&nbsp; Roll coins rarely if ever get very dark like the mint set coins and just get an unattractive &quot;splotchiness&quot; that is rarely removable at all.&nbsp; </p><p><br /></p><p>It&#039;s the mint set packaging that is the problem and it affects sets from &#039;65 to &#039;80 and later ones to a lesser degree.&nbsp; Poor storage exacerbates it but even sets in safety deposit boxes are affected. Some dates are worse than others and &#039;69 is probably the worst of all though for percentage of sets affected &#039;70 might lead the way.&nbsp; </p><p><br /></p><p>Nickels are a little more stable and more likely to clean up OK.&nbsp; Cents run the gamut from almost all of them being destroyed (&#039;68-P) to few of them being affected at all (&#039;90-D).&nbsp; Right now all the later dates (&#039;86 to date) may seem stable but I believe they will be next.&nbsp; </p><p><br /></p><p>Right now there are some coins that for most practical purposes don&#039;t exist in mint sets because they are ugly in sets (&#039;84 cent) or they have almost all gone bad (&#039;68 cent).&nbsp; But most of the tarnished coins can be saved. Unfortunately it&#039;s the worst coins and the Gem PL&#039;s that are least likely to be saved.&nbsp; Others range from about 50 to 60% unsalvageable to less than 1%.&nbsp;&nbsp; &#039;68 dimes are one oif the worst.&nbsp; Most of these weren&#039;t that pretty to start with but the tarnish seems to be virtually &quot;absorbed&quot; by the porous surfaces.&nbsp; </p><p><br /></p><p>These sets are disappearing at a breakneck pace right now and i have the sense that not enough are being stabilized.&nbsp; I also have the sense that the of the vast number of sets that have already been destroyed few of the coins were ever saved.&nbsp; The sets were destroyed largely to get the half dollars and dollars from them and the rest of the coins merely spent.[/QUOTE]</p><p><br /></p>

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