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<p>[QUOTE=&quot;Nathan B., post: 7886261, member: 112852&quot;]Some time after I bought my Menander drachm that I&#039;ve written about previously, I was able to pick up a lot of three more drachms of the same type fairly cheaply from an English auction house.&nbsp; This auction house had apparently kept them in their vault for a long time.&nbsp; The problem is: these are silver coins--at least they better be!--but they have toned brown like copper.&nbsp; They were this way when I bid on them, so I wasn&#039;t shocked by their colour.</p><p><br /></p><p>But I&#039;m still wondering about them.&nbsp; </p><p><br /></p><p>My questions are:</p><p><br /></p><ul> <li>why did they go brown?&nbsp; Is this toning, or something different?</li> <li>how could they get that way?</li> <li>should I keep them as they are?</li> <li>or, should I try to treat them in some way so as to remove the brown toning?&nbsp; And if so, wouldn&#039;t that destroy some of the value of the coin, as well as damage its surfaces?</li> </ul><p>One of the three is shown below:</p><p><br /></p><p>[ATTACH=full]1360400[/ATTACH]</p><p><br /></p><p>It weighs 2.42 grams (my scale weighs it differently by about 0.01 every time!).&nbsp; Its diameter matches my first drachm, which I got from CNG.&nbsp; Its thickness seems right, too.</p><p><br /></p><p>If you have any thoughts or insights, please feel free to share them.[/QUOTE]</p><p><br /></p>

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