There is a machine used by the TPGs (the name escapes me, but it was shown in an SGC walk-through Youtube video) that is basically a very effective black light. When a card is put inside and the 'lights' are turned on, it reveals everything - any unseen wrinkles, creases, recolored areas, etc. - so if there are any cards doctored with a paint brush (for lack of a better term) getting anything other than "ALTERED" on the label by a TPG using this machine, you have to strongly consider whether or not they are directly in on the scam.
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