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DavidReferring to the above paragraph three-- from what I have seen, PSA has an essential ignorance about printing techniques, and this has lead to some of their goofiest bluders (including Andy's Sporting New Ruth). In my opinion, identification and understand of printing is essential to authentication. I also beleive that some people at MastroNet lack a grasp of the subtlties of printing and photography which has lead to occasional (not common) labelling, description and dating of items in their auctions.