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<p>[QUOTE=&quot;jolumoga, post: 26821964, member: 41780&quot;]My hypothesis as a dilettante-wannabe-nobody is as follows:</p><p><br /></p><p>Given that Peace dollars were produced in the early 20th century, it&#039;s likely there were some contaminants in this early industrial process. Likely the main culprit is silver chloride in the rinsing, though there could be other culprits. Silver sulfide, or what we regard as toning, can develop over the silver chloride, effectively concealing the contaminant. As coin surfaces are altered with chemical dips, the silver chloride is re-exposed at the surface. This would explain everything we see in a coherent way. Again, I am open to being corrected.[/QUOTE]</p><p><br /></p>

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