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<p>[QUOTE=&quot;MatrixMP-9, post: 3095883, member: 93422&quot;]Yep, picked one of them off. Now Im curious how the hell that even happens. What would create enough &quot;pressure&quot; to make the zinc inside &quot;boil&quot; out through the copper coating? Heat? Pressure? Both? would it be something that happens at the mint or would it be from a coin being put in a clothes dryer or something? I tried to google it and couldnt find anything at all. the temps to melt zinc appear to be lower than copper from what I can see but could be wrong. Maybe it was in a furnace or something that got the zinc hot enough to liquify but not hot enough to have an effect on the copper? I dont know the processes at the mint but I cant think of how this could happen there. Kind of interesting though from a sciency type perspective I guess.</p><p><br /></p><p><br /></p><p><br /></p><p>[ATTACH=full]782336[/ATTACH] [ATTACH=full]782337[/ATTACH][/QUOTE]</p><p><br /></p>

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