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<p>[QUOTE=&quot;desertgem, post: 1930766, member: 15199&quot;]At this stage, you wouldn&#039;t want them to grade with the extent of corrosion that is there, it would only get worse in any holder. I think that it can be reduced enough to see if the corrosion is deep enough to have the environmental damage apply. I would soak in distilled water for a few hours and then put them in a small glass container of acetone about an inch deep for a few minutes, take out , allow to air dry and then follow the directions on the Verdi-care. </p><p><br /></p><p>Toothpicks, green rose thorns or Bougainvilla thorns, bamboo skewers, etc. , are easy to scratch the surface, especially inside of letters or date numerals where few scratches should be , and cleaning is usually noticed. Some of experience&nbsp; use a fine hog bristle or camel hair art brush soaked with excess acetone to gently break up some field deposits, but it is at one&#039;s own risk as a last resort. The acetone and Verdicare, will usually give you a good idea before trying any physical means.[/QUOTE]</p><p><br /></p>

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