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<p>[QUOTE=&quot;TIF, post: 2063650, member: 56859&quot;]This one looks like a good candidate for cleaning with weak acid.&nbsp; Try white vinegar or lemon juice.&nbsp; It might take a few minutes or even a few hours and you&#039;ll have to keep a fairly close watch.</p><p><br /></p><p>Remember that Pontos Perseus &amp; Medusa I found at a jewelry store?&nbsp; It had very similar green oxides which dissolved right off without any (well, very minimal) mechanical action.&nbsp; If you use acid and it works, be sure to give it a very long soak in distilled water afterwards.&nbsp; Change several times.&nbsp; With the Pontos, after an initial water rinse I gave it a brief soak in a sodium bicarb solution and then did multiple plain water soaks.</p><p><br /></p><p>Of course it is possible that if you clean it will acid you will ruin it.&nbsp; <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie8" alt=":D" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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