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<p>[QUOTE=&quot;Just Carl, post: 257614, member: 4552&quot;]If you still have Lead-Acid battery, open the ports and take some of the acid out. Place all your coins in a Aluminum pan with the acid. Leave for one year. :smile :whistle: </p><p>OK now for real, don&#039;t do anything with the coins. If you have coins worth grading, NGC will usually do a little professional cleaning if possible. Do not try any things people say is OK because they are not their coins so they can tell you anything and if it doesn&#039;t work and&nbsp; you ruin the coins, they just say Oh well to bad, your coins, so. </p><p>As to stuff like Olive Oils or WD-40 and other oily cleaning agents. There have been reports of people using such things and having good, decent, great or horrible results. The reason it varies is the solution used varies as well as the climatic conditions used. Note Olive Oil for example. This is a man made substance and varies from manufacturer to manufacturer. Some may have numerous contaminates that are not dangerous for some things but may effect coins. Same with WD-40. Even similar cans from the same shelf may contain slightly different ingrediants pending the manufacturing processes. In industry there are numerous differences bases on tolerances in the end product. For example even a steel beam can have as much as a fraction of an inch in size difference and still be called the same thing as specified. This is well true of substances like Olive Oil. Even the containers used for these substances could change their chemical structure. </p><p>Summation: DO NOT CLEAN COINS.[/QUOTE]</p><p><br /></p>

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