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<p>[QUOTE=&quot;John Anthony, post: 2128743, member: 42773&quot;]I don&#039;t know the specifics, Jim, as I don&#039;t clean coins myself. But just about any application is acceptable as long as it doesn&#039;t damage the coin. Toning is moot, because after thousands of years, newly-discovered silver will always be black. Once the dirt is removed from silver coins, they almost always get dipped. Sometimes they re-tone to pleasing colors, but most of my silver is blast-white.</p><p><br /></p><p>The old methods of cleaning bronze, soaking in distilled water and olive oil, and gently scrubbing or picking away the dirt have been supplanted by chemical treatments. These have become sophisticated enough to dissolve dirt without damaging patina. In fact, they are preferable to any sort of scrubbing, because scrubbing always comes with the danger of scratching. Two members of this forum have given me the recipes for such chemical treatment, but I have not saved them as I don&#039;t clean coins.</p><p><br /></p><p>Electrolysis is taboo - way too harsh. There&#039;s nothing that looks worse than a ancient bronze that&#039;s as shiny as a newly-minted penny.[/QUOTE]</p><p><br /></p>

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