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<p>[QUOTE=&quot;John Anthony, post: 2209420, member: 42773&quot;]The biggest concern for us is bronze disease. It&#039;s important to keep coins stored in a relatively dry environment, but if one is careful about buying coins with completely intact patinas, bronze disease is rarely a problem, even in the most humid conditions.</p><p><br /></p><p>Ancient silver is almost always dipped - when it comes out of excavations it is typically coal-black and unattractive, so dipping is <i>de rigeur</i>. It will tone like any silver, sometimes with lovely colors, sometimes not so much. The same precautions need to be taken as with modern silver - keeping the coins dry and away from sulphuric influences (unless you want them to tone of course).</p><p><br /></p><p>Gold is gold, and rarely tones unless it has a significant amount of copper or silver in the alloy.</p><p><br /></p><p>But as far as dents, scratches, and fingerprints go, I handle my coins frequently and don&#039;t need to hold my breath, either literally or figuratively. Of course I don&#039;t play frisbee with them either. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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