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<p>[QUOTE=&quot;happycobra, post: 70336, member: 3750&quot;]On silver it looks like a dull gray to gray-blue film on the surfs. In extreme cases it turns green and can deeply damage the surfs of the coin. Damage can look like little gray or green bubbles. If dipped it may look more brown in color. Such bumps can form a crust on high spots where direct contact of PVC was made. After cleaning it may look like little pit under 20x power, that leaves the surfs dull looking. </p><p><br /></p><p>I stopped most of the damage on my coins by cleaning before noticeably damage to the field surfs. However most of my 50+ BU and proof coins have some pitting on the rim and common wear spots.</p><p><br /></p><p>Things to look for if your buying a clean PVC coin: </p><p>Small pitting on wear spots,</p><p>Hair lines form rubbing (cleaning),</p><p>Odd colored tone from dipping,</p><p>A dull gray to gray-blue or brownish film ring around or next to the high spots where it’s would be hard to clean. Such as tightly spaced lettering.[/QUOTE]</p><p><br /></p>

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