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<p>[QUOTE="gsimonel, post: 2750606, member: 82549"]If nothing else works, electrolysis can sometimes yield great results, especially if the coin is heavily encrusted. However, if the encrustation is caused by corrosion of the surface, then the surface is already pitted and pockmarked, and removing the encrustation will yield an ugly surface.</p><p><br /></p><p>The coin below is an extreme example, a coin that was heavily encrusted due to corrosion of the surface. Before electrolysis is was not even identifiable; it was just a large, ugly blob. Electrolysis did not cause the surface damage, but it revealed it. You can easily see where the surface was corroded and where it wasn't. This is most obvious on the reverse:</p><p><img src="http://feltemp.com/Images/GoldenAge/Vitellius.JPG" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p>Vitellius</p><p>Imperator, 69 A.D.</p><p>Bronze As</p><p>Spanish (Tarraco?) mint</p><p>Obv: A VITELLIVS - IMP GERMAN</p><p>Rev: VICTORIA AVGVSTI - Victory, with shield inscribed S P Q R, between S and C</p><p>RIC 46</p><p>29mm, 8.4g.</p><p><br /></p><p>Horrible shape, but at least now I know what it is, and it's a pretty scarce emperor.</p><p><br /></p><p>Here's an electrolysis success story, albeit not a coin:</p><p><br /></p><p><a href="http://simoslife.blogspot.com/2016/08/before-and-after.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://simoslife.blogspot.com/2016/08/before-and-after.html" rel="nofollow">http://simoslife.blogspot.com/2016/08/before-and-after.html</a>[/QUOTE]</p><p><br /></p>
[QUOTE="gsimonel, post: 2750606, member: 82549"]If nothing else works, electrolysis can sometimes yield great results, especially if the coin is heavily encrusted. However, if the encrustation is caused by corrosion of the surface, then the surface is already pitted and pockmarked, and removing the encrustation will yield an ugly surface. The coin below is an extreme example, a coin that was heavily encrusted due to corrosion of the surface. Before electrolysis is was not even identifiable; it was just a large, ugly blob. Electrolysis did not cause the surface damage, but it revealed it. You can easily see where the surface was corroded and where it wasn't. This is most obvious on the reverse: [IMG]http://feltemp.com/Images/GoldenAge/Vitellius.JPG[/IMG] Vitellius Imperator, 69 A.D. Bronze As Spanish (Tarraco?) mint Obv: A VITELLIVS - IMP GERMAN Rev: VICTORIA AVGVSTI - Victory, with shield inscribed S P Q R, between S and C RIC 46 29mm, 8.4g. Horrible shape, but at least now I know what it is, and it's a pretty scarce emperor. Here's an electrolysis success story, albeit not a coin: [url]http://simoslife.blogspot.com/2016/08/before-and-after.html[/url][/QUOTE]
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