Popular card graders, and authenticators include PSA, BGS SGC and GAI. When you mail in the card it will be both authenticated, and Graded. Grade is always a big component on value. The higher the grade, the more desirable, and consequently, the more valuable the item. Nowadays nearly all valuable sports cards are graded using the 10 Point Grading Scale established by Professional Sports Authenticator (PSA) in 1991.
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