But we have too many coins as it is. Like BILLIONS! It's numismatic darwinism.
Here are before/after photos of three of my bottom-drawer silver dollars that I cleaned with Tarn-X and a bit of soft-bristle toothbrush action....
I use Tarn-X on silver coins frequently with very good results. I dip the coins, mostly Morgan Silver dollars, for several minutes, then rinse...
So does this error add to the value? I have a roll of 1968-s pennies and about 30% of them have this error.
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