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<p>[QUOTE=&quot;Oldhoopster, post: 4765895, member: 84179&quot;]NO!</p><p><br /></p><p>It’s not ZnCl2.&nbsp; The zinc core would have to exposed for that to occur and there is no indication of the copper plating missing from your coins.&nbsp;&nbsp; There are also copper corrosion products that have a blue/green appearance like your first coin.&nbsp; You suggest that it’s due to something the mint left on the coins?&nbsp;&nbsp; The mint doesn’t put anything on the coins, not ZnCl2, not powdered zinc (an explosion hazard), and not NaOH.</p><p><br /></p><p>You also need to remember that the mint does not roll coins.&nbsp;&nbsp; They mint ships them to contractors in large ballistic bags that contain thousands of coins (I think it’s $4000/bag but am not positive).&nbsp; It’s the contractors who roll and distribute them.&nbsp; Lots of things can happen after the coins leave the mint.&nbsp; The ballistic bags could have gotten wet in transit or storage.&nbsp; Bags could rip and have to be cleaned up (Having personal experience with operators hitting 2200 lb bags of ceramic raw materials with the forks of a fork truck, I can say that it isn’t uncommon and it’s a pain to clean up).</p><p><br /></p><p>Your coins were just exposed to something before the contactor rolled them that caused environmental damage. Nothing more[/QUOTE]</p><p><br /></p>

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