CGC Help Center

For answers to frequently asked questions about CGC membership, submissions, grading and more, scroll below. To contact CGC Customer Service, click here.

Help Topics

Collectibles Accepted by CGC

Does CGC grade magazine-size or treasury-size books?

CGC does grade magazine-size books. However, CGC does not grade treasury-size books as their size exceeds even the largest available CGC holder.

Does CGC grade autographed books?

Yes, under the following circumstances: CGC's prestigious Signature Series label (yellow) is applied to comic books that have been signed under the direct observation of a CGC employee or a select CGC authorized witness, or in select instances where CGC accepted signed books directly from the signer / publisher. The signatures are authenticated by CGC, and the labels indicate who signed the book, the date it was signed and, in some cases, the location where it was signed. If a book is signed without a CGC representative present, it will receive a Qualified label (green), and will receive a Qualified grade. No authentication of signature is provided for books that do not have a CGC Signature Series label. To learn more about CGC Signature Series, visit

Does CGC certify sealed poly-bagged books?

CGC does not certify sealed poly-bagged books. To have a poly-bagged book certified by CGC, you must remove the book from its poly-bag or send written approval authorizing CGC to remove it. The words "Poly-bag removed" appear on the CGC label.

Still not finding an answer? Contact CGC Customer Service at 1.877.NM.COMIC, 941 360 3991 or