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warshawlawDo they rub them out with the back of a spoon? Press them out with a hydraulic press? Soak the card then press it under stacks of books? Exactly what is being done to these cards that are then slabbed for all eternity? Who is doing it? Does Mastro have an in-house specialist? Is there a protocol followed for deciding which cards are in need of "enhancing"? Does Mastro notify its consignors that the cards are being worked on (since there is a risk that an eagle eyed grader may reject the card as "N-5")?