CGC Help Center

Derived from the Overstreet grading criteria, the CGC grading standard was first developed by taking a consensus of grades assigned to a variety of comic books from a nationwide pool of experts, including comic book dealers and leading collectors. CGC realizes that comic book grading is an art that develops from years of experience, and while our consistently applied standard of grading eliminates much of the subjectivity and risk, grading itself is not an exact science. That's why it is reasonable to expect that slight variances may exist between CGC grading standards and the standards of some dealers and collectors, as well as comics that have been previously graded by CGC since its inception. CGC strives to consistently apply the most accurate and consistent grading standard to assure that the grades of comic books are properly represented to the widest possible audience. To learn more, visit https://www.cgccomics.com/grading/grading-benefits/

When submitting a collectible that was graded by another grading service, there is no guarantee that the grade assigned by CGC will be the same as the grade assigned by the other grading service.