Moderatly Oxidized Zinc Coins, Any Suggestions?

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Author	Replies: 3 / Views: 1,611
Tim Stroud Pillar of the Community United States 2661 Posts	Posted 11/07/2010 10:11 am I have a dozen or so zinc 5 Groschen coins that are oxidized. Does any one have any suggestions on how to remove it and keep it from coming back without damaging the coins? One suggestion I had was to to get a micro fiber cloth and dip them in olive oil and give them a good rub but I don't care much for that idea. I feel that the oxidized zinc would abrade the coins surface with the rubbing action. Report this Post to the Staff

svslav Pillar of the Community United States 2605 Posts	Posted 11/07/2010 9:45 pm I don't believe you can do anything about that (without damaging the coin, of course). That's why they don't mint (unprotected/unclad) zinc coins anymore. Report this Post to the Staff
sel_69l Bedrock of the Community Australia 21788 Posts	Posted 11/09/2010 06:45 am I used to have a sample of metallic sodium stored in a chemical laboratory once. Some in the CCF may know that sodium metal is VERY extremely reactive and is dangerous. Normally this stuff is stored in kerosene, in an airtight glass jar. Kerosene is about the only liquid that will seal it from the air, but will not react with it. I guess by the same reasoning, the best thing to preserve zinc coins is to rub paraffin jelly on them. With zinc coins, once they are gone, they are gone! Report this Post to the Staff
weavus135 Pillar of the Community United States 539 Posts	Posted 11/09/2010 3:42 pm so if one had say a dozen zinc coins of Nazi Germany and they all had some level of oxidation on them, there would be no real harm in just scrubbing the heck out of them 'cause they are already worthless? Report this Post to the Staff
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