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<p>[QUOTE=&quot;chrsmat71, post: 2351597, member: 42634&quot;]Whatever we want to call it, isn&#039;t it safe to say that if it&#039;s rock hard, you&#039;re good.&nbsp;&nbsp; If it comes off with a fingernail scrape...no good.&nbsp; So the stuff on the byzantine coin is sent off is ok, if you want to call it verdigris or a mineral.</p><p><br /></p><p>this stuff, is not good whatever you want to call it (it&#039;s always BD in my mind).&nbsp; came off as a powdery residue with a fingernail scrape.</p><p><br /></p><p><a href="http://s1241.photobucket.com/user/chrsmat71/media/102_4608_zps4b561834.jpg.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://s1241.photobucket.com/user/chrsmat71/media/102_4608_zps4b561834.jpg.html" rel="nofollow"><img src="http://i1241.photobucket.com/albums/gg513/chrsmat71/102_4608_zps4b561834.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></a></p><p><br /></p><p>it appeared in months are was already eating into the surface of the coin (see the pitting where it was?).&nbsp; I did treat this with distilled water soaking, then baking followed by Verdi-care.&nbsp; for a year, its been like this (I got it out and checked it again right before this post..check your coins regularly!).</p><p><br /></p><p><a href="http://s1241.photobucket.com/user/chrsmat71/media/102_4623_zpsf5cf7399.jpg.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://s1241.photobucket.com/user/chrsmat71/media/102_4623_zpsf5cf7399.jpg.html" rel="nofollow"><img src="http://i1241.photobucket.com/albums/gg513/chrsmat71/102_4623_zpsf5cf7399.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></a>[/QUOTE]</p><p><br /></p>

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