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<p>[QUOTE=&quot;Just Carl, post: 517843, member: 4552&quot;]All so true. Or almost. Note that common salt is NaCl and the Cl does in fact react with Gold to form AuCl3. Not easily but it does react. Gold also combines with salts of Fluorine, Cyanide, etc. Althogh Gold is not very reactive, it still is not inert. </p><p>As to those 43 cents. I too&nbsp; have experimented with them. And as already noted the outer layer of Zinc when gone exposes the Steel inside. The rust is Iron Oxide and even if removed, as in the photos posted, there are those nicely damaged marks. The steel used back then was of a very reactive with Oxygen type and as fast as you clean off the Rust, it will start to reappear even faster unless it is placed in an Oxygen free invironment. Coating with any type of oil will also slow down the process however, remember that even oils can absorb Oxygen and that will still react with the coins. </p><p>The rate of Rusting is pending on the amount of Oxygen present as well as the temperatures. There is more than one type of Iron Rust and some are easily removed and others not so easy. </p><p>The main thing is since there are so many millions of those coins around, why not just acquire the ones without the rust?[/QUOTE]</p><p><br /></p>

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