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<p>[QUOTE=&quot;Paul M., post: 2399419, member: 73165&quot;]This is all very simple.&nbsp; Corrosion is bad stuff that eats away the surface of the metal.&nbsp; Verdigris is bad stuff on copper that is green.&nbsp; Patina is good stuff (that could be green or not).&nbsp; Toning is good stuff that could be just about any color, unless it&#039;s black and on a coin minted after around 1600 (then it&#039;s environmental damage), or it&#039;s blatantly artificially induced.</p><p><br /></p><p>There.&nbsp; Subthread over, lol. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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