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<p>[QUOTE=&quot;Modern Commens, post: 779551, member: 20737&quot;]You&#039;re probably right. I had a doucument somewhere that discussed the chemical reaction that makes silver tarnish and it mostly discussed the amount of sulpher in the air or the amount that the silver gets exposed to. I don&#039;t think that the manager at the mint was actually saying that if were 100% silver that it would never tarnish no matter what you exposed it to. I gathered that it would futher slow the process if all impurities were eliminated keeping the coins in MS or PF condition longer if they were kept unexposed, sealed against sulpher.[/QUOTE]</p><p><br /></p>

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