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<p>[QUOTE="cmbdii, post: 4237, member: 655"]Ahem..... well, actually, brown spots/ toning on silver is oxide while black or gray spots/toning is sulphide. Brown toning can happen from exposure to humid air or water while black toning usually comes from contact with a holder that isn't sufficiently inert or from skin oils or other contaminants staying on a coin in a holder for a period of time.</p><p><br /></p><p> Yeah, I know. That's a nitpicking response. ;-)[/QUOTE]</p><p><br /></p>
[QUOTE="cmbdii, post: 4237, member: 655"]Ahem..... well, actually, brown spots/ toning on silver is oxide while black or gray spots/toning is sulphide. Brown toning can happen from exposure to humid air or water while black toning usually comes from contact with a holder that isn't sufficiently inert or from skin oils or other contaminants staying on a coin in a holder for a period of time. Yeah, I know. That's a nitpicking response. ;-)[/QUOTE]
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