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<p>[QUOTE="Conder101, post: 827914, member: 66"]Do not use aqua regia on the coin (It will remove the gold but it will attack the silver more strongly than it will the gold.)</p><p><br /></p><p>The plating can be removed but not without some damage to the coin. It will be much less damaged than it is now though. The easiest way to do it is reverse electrolysis. It was plated by immersing in a gold bearing electrolyte and being connected to a DC current with the coin as the cathode and a piece of gold as the anode. If you reverse the polarity, gold atoms will come off the coin and go into solution, and gold atoms will come out of solution to deposit on the gold cathode. Some silver will also come off the coin but if your electrolyte is gold bearing the gold will come off at a significant faster rate than the silver. After the gold is removed the coin may have a very slight roughened surface, but that is better than a gold plating.[/QUOTE]</p><p><br /></p>
[QUOTE="Conder101, post: 827914, member: 66"]Do not use aqua regia on the coin (It will remove the gold but it will attack the silver more strongly than it will the gold.) The plating can be removed but not without some damage to the coin. It will be much less damaged than it is now though. The easiest way to do it is reverse electrolysis. It was plated by immersing in a gold bearing electrolyte and being connected to a DC current with the coin as the cathode and a piece of gold as the anode. If you reverse the polarity, gold atoms will come off the coin and go into solution, and gold atoms will come out of solution to deposit on the gold cathode. Some silver will also come off the coin but if your electrolyte is gold bearing the gold will come off at a significant faster rate than the silver. After the gold is removed the coin may have a very slight roughened surface, but that is better than a gold plating.[/QUOTE]
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