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<p>[QUOTE=&quot;TIF, post: 3109057, member: 56859&quot;]It&#039;s often difficult to say if a coin has BD without looking at the coin in person.&nbsp; In general, the &quot;is it soft and powdery; does it flake off when scraped with a fingernail&quot; test is good.</p><p><br /></p><p>However, I&#039;ve had some coins which had non-flaky light or medium green patches which <i>were</i> BD... those coins had been waxed at some point in the past so the topmost layer of green corrosion wasn&#039;t flaky.&nbsp; It was held firm with the wax or whatever coating was on the coin while beneath that tenuous layer rapid corrosion was taking place.</p><p><br /></p><p>[USER=74343]@Evan8[/USER], your coin looks like it had metal loss from BD at some point in its past.&nbsp; I&#039;d keep an eye on it and of course store it in a dry place or with desiccant.&nbsp; If in the future it shows any signs of accelerated corrosion, I&#039;d soak it in a solvent to remove whatever coating might be on the coin, then treat with Verdicare or a more aggressive protocol.&nbsp; Wouldn&#039;t be a bad idea to apply some Verdicare now anyway.</p><p><br /></p><p>[USER=4348]@Nathan[/USER], your coin worries me (the spots marked by the arrow plus various tiny spots).&nbsp; As noted above, sometimes oils or waxes can keep BD powder from flaking off.&nbsp; &nbsp; If this were my coin I&#039;d soak it in a solvent and treat with Verdicare to be on the safe side.</p><p><br /></p><p>[ATTACH=full]788545[/ATTACH]</p><p><br /></p><p><br /></p><p>[USER=75937]@Roman Collector[/USER], I have the same concerns for your coin.&nbsp; When I see that lighter but non-flaky green I wonder if it is BD powder that has been &quot;solidified&quot; with a topical treatment.</p><p><br /></p><p>The usual disclaimers apply:&nbsp; I am not an expert; I may be wrong; etc <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" />&nbsp; I have however had and treated many coins with BD.[/QUOTE]</p><p><br /></p>

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