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<p>[QUOTE=&quot;BenL, post: 2298096, member: 75616&quot;]So I&#039;m sure this question has been asked and answered many times...but using the search function I haven&#039;t been able to find specific answers I&#039;m looking for.&nbsp; Google search is similarly not returning specific answers.&nbsp; I&#039;m a novice so forgive me for clogging the forums with a simple question like this. </p><p><br /></p><p><b>Is it advisable to soak coins in 90% iso alcohol to remove skin oils/fingerprints?&nbsp; How about to just remove &quot;gunk&quot; from circulated coins?</b> </p><p><br /></p><p>I understand that copper reacts differently than other metals, and specifically in mind I have a bunch of NIFC Kennedy halves, some of which have minor fingerprints/oils showing, and then just random circulated US coinage (all denominations) with oils/&quot;gunk&quot; etc.&nbsp; I also have a stack of BU Austrian Philharmonics, and a friend of mine fingered one up not knowing how to handle coins properly, so it now has fingerprints/oils on it.&nbsp; I happen to have a bottle of 90% iso alcohol in the bathroom, so I&#039;m wondering if this stuff does the trick to remove minor stuff like what I&#039;m describing.</p><p><br /></p><p>Feedback much appreciated!</p><p><br /></p><p>Edit:&nbsp; I will check back later for answers, not ignoring anybody&nbsp; <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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