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<p>[QUOTE=&quot;GDJMSP, post: 163555, member: 112&quot;]That&#039;s just it - you shouldn&#039;t use anything. The oxidizing you mention is most likely natural toning - it is what happens to coins when they are exposed to the air. Some call it tarnish, some call it oxidation, some call it toning - but whatever you call it, it is completely natural and is supposed to happen. Quite often it can even add a good deal of value to the coin. It is not unheard of for a nicely toned coin to sell for up to 10 times as much as an untoned coin of the same date and mint.</p><p><br /></p><p>Now, if you just don&#039;t like the toning and you want it gone, that is possible. But you don&#039;t EVER touch the surface of the coin with anything. The softest cloth, the softest cotton ball, the softest Q-Tip - anything that you touch the surface of the coin with WILL leave marks. The only way to remove toning is to use a chemical dip - it&#039;s a liquid ( an acid really ) that you dip the coin into. That will remove the toning. You can buy these dips at almost any coin shop or on-line coin supply store.</p><p><br /></p><p>BUT - I do not recommend that you do this. Dips remove the toning because the acid eats away the topmost layer of metal on the coin. Dips also remove luster and damage the coin unless you are very experienced in using them. It only takes a second or two to do the damage - and once done the damage cannot be undone. That is why most will tell you to NOT CLEAN coins - with anything.</p><p><br /></p><p>There are professional services that you can use - they will remove dirt, gunk and substance that is not supposed to be on the surface of a coin. They DO NOT remove toning or tarnish. This is because they are well aware of the damage this does to the coin.</p><p><br /></p><p>Please, believe me - you are not alone in this. There have been hundreds of people ask this same question. That is because they all think that there just has to be something that you can use to clean coins and not harm them. Well, I&#039;m sorry - there IS NOT.[/QUOTE]</p><p><br /></p>

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