Cameo. When a character is shown briefly in a comic book.
CCA. An abbreviation for the Comics Code Authority.
CCA Seal. A small emblem placed on all comics from April–May 1955 to the present, reading, "Approved by the CCA."
Census Report. The list of comic books graded by CGC that shows scarcity between books and also relative scarcity of grade.
Centerfold. The stapled, four-page middle sheet of a comic.
Certification. The professional evaluation of grade and condition of a comic book, including examination for restoration and other characteristics of book integrity.
CGC. Certified Guaranty Company.
Chromium Cover. A special foil used on covers.
Classic Cover. A cover that is recognized by the industry as being an excellent example of its kind, and as such is highly prized by collectors.
Cleaning. A process in which dirt and dust is removed from the comic.
Color Touch. A restoration process that uses ink, marker, acrylic and such to fill in areas of missing color on a comic book.
Comic Book Dealer. One who makes a living buying and selling comic books.
Comics Code Authority. In 1954, major publishers formed a committee to set up guidelines for acceptable contents in a comic book. This was the industry response to hearings held by the government that could have led to the cessation of the publishing of comic books. Today, some publishers no longer use the CCA.
Complete Run. All issues of a specific title.
Con. A convention of fans where they can buy and sell comics and also meet industry professionals.
Condition. The state of preservation of a comic book. Also referred to as grade.
Label. The easy-to-understand label placed in the interior of the CGC holder. The label displays the title, issue #, publisher, and grade of a comic book. It will also display the comments for Key Issues and the creators, artists, and writers. CGC uses five differently colored labels which represent Universal, Signature Series, Signature Series Restored, Restored, and Qualified.
Lenticular Cover. Images move when the cover of the comic book is tilted.
Marvel Chipping. A trimming defect that occurred primarily in 1960s Marvel Comics which produced a ragged edge around the comic book cover, most commonly in the form of tiny fleck or chips along the right side of the comic book.
MicroChamber. A "paper" used to preserve paper empheria by taking contaminants out of the sealed area where it has been placed.
Painted Cover. A cover of a comic book where a painting was used for the artwork instead of a line drawing.
Pedigree. A comic book that is from a widely known original owner collection.
Penciler. The artist who does the original line drawings of the comic book.
Photo Cover. A cover of a comic book where a photograph was used for the artwork instead of or in conjunction with a line drawing.
Platinum Age. The first age of comics, beginning in 1897, with early newspaper reprints (such as The Yellow Kid), bound into book form.
Post-Code. Any comic books that are published after the Comics Code Authority (CCA) seal came into use.
Pre-Code. Comic books that were published before the Comics Code Authority came into effect. They have no CCA seal.
Price Variant. A comic book that has a different cover price than others of the same comic book and that was intended for distribution in the same country.
Printing/Manufacturing Defect. A defect that was caused by an error in the printing process, such as paper wrinkling, miscut edges, misfolded spine, untrimmed pages (Siamese pages), off-center trimming or inks, and misfolded and misbound pages.
Prism Cover. A comic book cover with special reflective material that has 3-dimensional repeated designs.
Qualified. A Qualified label is used by CGC for certified books that have a significant defect that needs specific description. For example, it would be a disservice to the seller and buyer to call a 9.2 book with a clipped coupon a 1.5, so CGC will give this book a Qualified grade of 9.2, COUPON CUT OUT OF 10TH PAGE.
Quarterly. A comic book that is published four times a year (every three months).