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<p>[QUOTE=&quot;robinjojo, post: 8215622, member: 110226&quot;]I find horn silver pretty stable.&nbsp; Once a coin is removed from the environmental factors that created the horn silver, I have found little change and no real growth, although I imagine humidity might cause some further oxidation over a long period of time.&nbsp; Remember, it took centuries, even thousands of years for that thick black layer to form on a silver coin.</p><p><br /></p><p>Yes, I have some ancients that are encrusted with horn silver, looking pretty much they way they did coming out of the ground.</p><p><br /></p><p>Here are a couple of examples:</p><p><br /></p><p>[ATTACH=full]1442045[/ATTACH] </p><p><br /></p><p><br /></p><p><br /></p><p>[ATTACH=full]1442047[/ATTACH][/QUOTE]</p><p><br /></p>

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