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<p>[QUOTE=&quot;hotwheelsearl, post: 4992145, member: 75143&quot;]I got this Maximinus seatertius for like $7. It was covered in some strange teal substance along with some bronze disease.</p><p><br /></p><p>I thought I could subject this coin to more chemicals than your average bag of Cheetos. The end result was... mediocre</p><p><br /></p><p>process: sodium thiosulfate soak was relatively ineffectual for the green.</p><p>Sodium hydroxide soak didn’t do too much either for the green but took away much of the surface mineral encrustations.</p><p>Vinegar soak took away most of the blue stuff.</p><p>Back into hydroxide for the last bit.</p><p>The green on the obverse was inert and wouldn’t budge.</p><p><br /></p><p>[ATTACH=full]1199118[/ATTACH]</p><p>[ATTACH=full]1199119[/ATTACH][/QUOTE]</p><p><br /></p>

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