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<p>[QUOTE=&quot;MrSpud, post: 96766, member: 4621&quot;]If an incirculated coin or proof is going to be placed into a holder or an album and it was accidently exposed to oils or sweat, it might be a good idea to carefully degrease the coin in an appropriate solvent, such as pure acetone, before placing the coin in the holder or album. But only if you know what you are doing because it is easy to contaminate the coins surface if the solvent isn&#039;t pure and it is easy to accidently make hairline scratches on the coin.</p><p><br /></p><p>For circulated coins, it is usually better to not remove anything off of the surface of the coin unless the coin is being attacked by an active corrosive agent. If you remove the surface &quot;crud&quot; all wear marks and/or scratches are typically magnified in appearance and oftentimes the coin ends up looking dull and lifeless. In other words, the eye appeal of the coin typically becomes negatively impacted by the cleaning. The unnatural gray appearance (or pinkish orange for copper coins) coupled with the greater noticability of every scratch and mark on the coin is a big turn off to a collector who is putting together a matched set of original looking coins. In an album the cleaned coin sticks out like a sore thumb.[/QUOTE]</p><p><br /></p>

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