Certified Guaranty Company

Certified Guaranty Company, also known as CGC, is a Sarasota, Floridacollectibles grading company specializing in comic books and trading cards. CGC is an independent member of the Certified Collectibles Group of companies.

The company was launched in early 2000 and has since gone on to become a significant part of the comic book collecting community. As of 2021, they have graded over 7 million comic books as well as some of the most expensive CCG cards.