CGC, Certified Guaranty Company, is a leading third-party grading service for pop culture collectibles. Founded in 2000, it provides collectors with impartial assessments of authenticity and condition, supported by a comprehensive guarantee and protective holders. CGC is part of the Certified Collectibles Group, an organization focused on services that support collecting, value, and community.

Its grading services cover comic books, trading cards, video games, home video, magazines, concert posters, lobby cards, and other collectibles. CGC also offers comic book pressing, restoration, and restoration-removal services to help improve a book’s appearance before grading. Through its Signature Series, the company authenticates witnessed signatures and connects fans with creators through event signings and private signings.

Collectors can submit items for grading and encapsulation, track submissions, and verify certification. CGC provides population reports for comics, magazines, lobby cards, and pulp, along with the CGC Registry, where collectors can display collections and compete for top sets. Its website also offers grading information, submission resources, dealer locations, events, and customer support.