CGC® and JSA® are excited to be accepting submissions of comics, cards, video games, and home video collectibles through our CGC Facilitator, Agents of Slabs, at GalaxyCon St. Louis, being held at America's Center in St. Louis, Missouri, on October 23-25, 2026. In addition, JSA will provide on-site autograph authentication at the event.
About GalaxyCon St. Louis
GalaxyCon St. Louis is more than just a comic-con... It's a full 3-day festival celebrating comic books, pop culture, sci-fi, fantasy, anime, gaming, cosplay, and so much more! The weekend will be filled with fan-favorite activities, such as celebrity and voice actor meetups, cosplay contests, panels hosted by actors and entertainers, fan group meetings, and more. Additionally, GalaxyCon will have hundreds of vendors and an artist alley ready to sell merchandise and exclusive artwork. You won't want to miss this event!
A CGC facilitator and JSA representatives will be accepting submissions, answering questions, and providing information on collectibles certification and autograph authentication services at the show. Bring your favorite collectibles to the show to take advantage of fast turnaround times and save one way on shipping fees! Further instructions on the submission process are below.
JSA on-site services for autographed memorabilia
Submit autographed memorabilia for Basic Certification (COA), and items are processed and finalized the same day. Collectors can also submit items for the JSA Letter of Authenticity (LOA). These are observed the same day, with final documented results sent later by mail. Go to SpenceLOA.com/fees for submission pricing.
Drop off CGC submissions with Agents of Slabs
As a CGC Facilitator, Agents of Slabs will be accepting all CGC submissions at their GalaxyCon St. Louis event booth. They are a CGC representative that has several years of experience in various areas of the comic book industry, including retail sales, customer service, and CGC Signature Series witnessing. Customers who use Agents of Slabs to facilitate CGC's grading service enjoy the added security of making sure their collectibles are safe and secure throughout the entire submission process, including constant communication about where collectibles are in the process. Agents of Slabs will be accepting comics, magazines, sports cards, TCGs, non-sports cards, video games, and home video collectibles on behalf of CGC. Simply bring your favorite collectibles to the show and follow the steps below to submit to CGC through Agents of Slabs:
Fill out a submission form at the Agents of Slabs booth and drop off your collectibles with a representative.
The submission will be tagged, and the customer will receive a copy of the filled-out form.
After purchase, the customer will receive email updates about their order from the point of drop-off to return shipping.
All submissions will be transported to CGC’s headquarters in Sarasota, Florida, for authentication, grading, and encapsulation.
To learn more about CGC and JSA services and fees for comics, click here.
To learn more about CGC and JSA services and fees for cards, click here.
To learn more about CGC services and fees for video games, click here.
To learn more about CGC services and fees for home video, click here.
To learn more about JSA services and fees for autographed memorabilia, click here.
Need more info?
Questions about CGC submissions should be sent to Service@CGCgrading.com.
Questions about JSA autographed memorabilia submissions should be sent to Info@SpenceLOA.com.
About CGC
Since revolutionizing comic book grading in 2000, CGC has grown to include certification services for a vast variety of pop culture collectibles, including trading card games (TCGs), sports cards, magazines, video games, and home media. CGC also offers seamless solutions for autograph collectors with CGC Signature Series and JSA Authentic Autograph services. If you collect it, we will grade and protect it.
CGC is part of the Certified Collectibles Group, a global provider of expert and impartial authentication and grading services for collectibles. Since 1987, the Certified Collectibles Group companies have certified more than 110 million collectibles, including coins, banknotes, comic books, cards, autographs, and stamps.