Chirs

Just want to add one problem with the whole it is OK to clean a little or never --- from seeing what some coin dealers do to improve a coin (remove dirt, PVC damage, fingerprints) and then get away with it, I think the playing field is unfairly tilted to dealers who figure ways to clean a coin to improve its grade with hardly any notice. Even the grading agencies can miss a cleaned coin if done very gingerly and well enough to not make it noticeable. And often the luster remains again if acetone is used very sparingly, spring water and a pat with cloth towel. I agree though to avoid acetone with to proof, enhanced uncirculated modern coins, any key date coins in uncirculated to proof condition before 1965 and anything before 1878. The only cleaning I do see done by dealers is coins damaged by PVC in their holders, typical of coins from 1960's thru 80's. So, the adage never clean you coins is not completely true. But it HOLDS much truth.