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<p>[QUOTE=&quot;desertgem, post: 518008, member: 15199&quot;]Doug, the inventor now says that he has found that a &quot;setting in air&quot; period of about 5 days after treatment restores the patina ( but sure not to exactly what it was). There is a pinkish coloration of &quot;fresh copper&quot;, and I suspect it would retone faster than an acid etched one.</p><p><br /></p><p>Jack, if acetone won&#039;t remove it,and it is bluish green, it is similar or same as verdigris, and it would be worth trying. With the Verdigone, you can see &quot;some&quot; effect in the first 24 hrs if it going to work. If it is working, let it work. If not, take it out <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie4" alt=":mad:" unselectable="on" unselectable="on" /> The coin in the photo looks too far gone. The green is almost blackish, more I suspect copper oxide which verdigone reacts with slowly.</p><p><br /></p><p>Acanthite, I plan to do that. Probably I will give up on it going farther in a couple of days if it cease progression. I know when all bue-green color is gone, the solution can&#039;t help the spot. </p><p><br /></p><p>Thanks for the comments Guys!</p><p><br /></p><p>Jim</p><p><br /></p><p>Hmmm just had a 4.0 earthquake centered about 20 miles away...interesting<img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie9" alt=":eek:" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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