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<p>[QUOTE="GDJMSP, post: 3055697, member: 112"]Howdy Andreea - </p><p><br /></p><p>Here's the thing about fingerprints - when they are fresh they can be safely removed. But if they are more than a week or two old, odds are they are not coming off short of using a commercial coin dip. </p><p><br /></p><p>Fingerprints, when they get on metal, become semi-permanent because of the acids in our body oils. They literally etch their way into the metal. And it doesn't take very long for this to happen. </p><p><br /></p><p>In regard to the basic question you asked about rinsing coins, without harming them, there are 4 things that are safe to use.</p><p>1 - distilled water</p><p>2 - acetone *</p><p>3 - xylene</p><p>4 - coin dip ***</p><p><br /></p><p>But even with distilled water, acetone and xylene care has to be taken and you have to do things the right way. I explain the right way in this thread - </p><p><a href="https://www.cointalk.com/threads/proper-acetone-procedure.193708/" class="internalLink ProxyLink" data-proxy-href="https://www.cointalk.com/threads/proper-acetone-procedure.193708/">https://www.cointalk.com/threads/proper-acetone-procedure.193708/</a></p><p><br /></p><p>The same procedure that I describe there for using acetone should be used for all three. It is also important to note that none of these 3 will remove toning, they will have no effect on toning.</p><p><br /></p><p>The asterisk for acetone is there for 2 reasons. 1 - it has to be pure acetone, not fingernail polish remover. And 2 because of copper. That's because if acetone is used on copper coins, sometimes those coins turn a weird color afterwards. So it is best not to use acetone on copper unless you absolutely have to. With copper, try distilled water first, then if that doesn't work use xylene.</p><p><br /></p><p>The 3 asterisks are there for coin dip because it should only be used by those who have a lot of experience with using it. Coin dip, if not used properly can ruin a coin, it will literally strip the luster right off a coin, forever making it a problem coin. But when it is used properly it will do things that nothing else can.[/QUOTE]</p><p><br /></p>
[QUOTE="GDJMSP, post: 3055697, member: 112"]Howdy Andreea - Here's the thing about fingerprints - when they are fresh they can be safely removed. But if they are more than a week or two old, odds are they are not coming off short of using a commercial coin dip. Fingerprints, when they get on metal, become semi-permanent because of the acids in our body oils. They literally etch their way into the metal. And it doesn't take very long for this to happen. In regard to the basic question you asked about rinsing coins, without harming them, there are 4 things that are safe to use. 1 - distilled water 2 - acetone * 3 - xylene 4 - coin dip *** But even with distilled water, acetone and xylene care has to be taken and you have to do things the right way. I explain the right way in this thread - [url]https://www.cointalk.com/threads/proper-acetone-procedure.193708/[/url] The same procedure that I describe there for using acetone should be used for all three. It is also important to note that none of these 3 will remove toning, they will have no effect on toning. The asterisk for acetone is there for 2 reasons. 1 - it has to be pure acetone, not fingernail polish remover. And 2 because of copper. That's because if acetone is used on copper coins, sometimes those coins turn a weird color afterwards. So it is best not to use acetone on copper unless you absolutely have to. With copper, try distilled water first, then if that doesn't work use xylene. The 3 asterisks are there for coin dip because it should only be used by those who have a lot of experience with using it. Coin dip, if not used properly can ruin a coin, it will literally strip the luster right off a coin, forever making it a problem coin. But when it is used properly it will do things that nothing else can.[/QUOTE]
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