I agree.
Old school pickling solution that contained mild sulfuric acid to clean coins causes this look over time.
Yes from pickling the coins in mild sulfuric acid to clean them.
Old school jewelers and coin guys use to use a pickling solution to clean dirty coins. It contained sulfuric acid which over time made these...
This is caused by old school guys cleaning pennies in a pickling solution. It contained sulfuric acid.
Old school coin guys and jewelers use to clean dirty pennies in a solution called pickle. It is a mild sulfuric acid. Over a long period of time...
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