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Since 1981, we have been buying & selling sports & non-sports cards, packs, boxes & cases. We have the necessary professional experience in authentication(over 40 years) & pre-grading (over 20 years) to carefully & accurately authenticate & grade your sports & non-sports card packs. Just as other authentication & grading companies allow ownership & employees to submit items for authentication & grading, SMC has also adopted a similar policy. We stand by our authentication & grading process. However, no one is infallible and if a mistake is made, we'll make it right.