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<p>[QUOTE=&quot;Coin Lover, post: 820913, member: 23593&quot;]NEED HELP! I encountered a problem with some of the silver coins - something like white mold started appearing! Here&#039;s what happened...</p><p>&nbsp;</p><p>Some of my coins are housed in archival coin flips; but since I see that air can still pass through, I decided to also put them in a zip lock, but did not put a desiccant. After only a few days, I noticed that some of them have those &quot;white tarnish&quot; in them, particularly a Canadian maple leaf winter olympics coin. (Please see attached file to know what I mean)</p><p>&nbsp;</p><p>Since this is a new coin (2010), I guess it&#039;s not tarnish produced by oxygen, especially if it&#039;s tightly inside the zip lock. I&#039;m guessing it might be because of the moisture? But I made sure the zip lock is dry before putting the coins in.</p><p>&nbsp;</p><p>Now I&#039;m confused. Should I remove the coins (housed in coin flips) from the zip lock and just put them in my box? Or should I still use a zip lock (to minimize air exposure) but with a desiccant inside? DO COIN FLIPS WORK TO MINIMIZE AIR EXPOSURE?</p><p>&nbsp;</p><p>To preserve their value, should I clean the coins with white marks, or should I leave them as is? Won&#039;t this &quot;white mold&quot; affect the silver content and value of the coin in any way? </p><p>&nbsp;</p><p>I see this also happening (but on a smaller scale) to a Mexican Libertad and Austrian Philharmonics. They all are previously in the same zip lock. Could the mold on the Canadian Maple Leaf have affected the other coins? Thanks!<p style="text-align: left"><span style="color: #000000"></span></p> <p style="text-align: left"><span style="color: #000000"><br /></span></p><p>[/QUOTE]</p><p><br /></p>

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