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whats up with this rare collor looking coins??
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<p>[QUOTE="expat, post: 5310187, member: 111067"]The ones imaged, No. when the plating solution is formulated it includes a small percentage of zinc, as the levels are topped up there becomes slightly above normal levels in the mix, this is what causes a quantity of coins in the production run to have a brass like look. when the zinc levels become to high a new batch of plating solution is produced and for a while the coins take on a more copper looking appearance. This is my understanding of the cause, and, as stated above, the others are just naturally toned[/QUOTE]</p><p><br /></p>
[QUOTE="expat, post: 5310187, member: 111067"]The ones imaged, No. when the plating solution is formulated it includes a small percentage of zinc, as the levels are topped up there becomes slightly above normal levels in the mix, this is what causes a quantity of coins in the production run to have a brass like look. when the zinc levels become to high a new batch of plating solution is produced and for a while the coins take on a more copper looking appearance. This is my understanding of the cause, and, as stated above, the others are just naturally toned[/QUOTE]
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whats up with this rare collor looking coins??
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