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<p>[QUOTE=&quot;Kentucky, post: 2454053, member: 33176&quot;]Wow, difficult question.&nbsp; The green color is corrosion, often referred to as verdigris.&nbsp; The corrosion uses the material of the coin along with other elements to make a new compound.&nbsp; The problem is, if you remove the corrosion, you remove parts of the coin.&nbsp; Perhaps the best answer is to remove the loose corrosion and try to stabilize what is left of the coin.&nbsp; I like VerdiCare, but this might not work too well for this particular coin.&nbsp; Off the top of my head, I would think placing the coin in a sink, on a plastic mesh or something that would keep it from going down the drain and deluging it with hot water from the tap would remove loose stuff.&nbsp; Next either rinse the coin with distilled water or at least pat it dry with a soft cloth.&nbsp; Finally dry it thoroughly with a hair dryer and store it in some capsule which will protect it from further corrosion.&nbsp; Make a decision if you want the responsibility of taking care of this or whether you should sell it.[/QUOTE]</p><p><br /></p>

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