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<p>[QUOTE=&quot;Conder101, post: 7630428, member: 66&quot;]It&#039;s a hard vacuum? <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" /></p><p><br /></p><p><br /></p><p>How can it be very acidic if it contains no chemicals? <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" /></p><p><br /></p><p>I think the acid has stripped the patina, and possibly some of the copper from the surface leaving the surfaces with a higher than normal nickel content.&nbsp; Remember there were known as &quot;white cents&quot; when new because the nickel content gave them a silverish color.&nbsp; I think you have &quot;restored&quot; the coin somewhat to it&#039;s original color, without the luster a new coin would have.[/QUOTE]</p><p><br /></p>

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