CGC x JSA to Offer On-site Grading at Baltimore Comic-Con as the Show’s Exclusive Authentication and Grading Service

CGC and JSA are excited to announce that the companies will be offering on-site autograph authentication and grading for comics as the Exclusive Authentication and Grading Service of Baltimore Comic-Con. This year’s convention will be October 17-19, 2025 at the Inner Harbor’s Baltimore Convention Center. See their website for ticketing details, guest information, and more!

Certified Guaranty Company (CGC) and James Spence Authentication (JSA) have announced that both companies will be accepting submissions and offering on-site grading for comics as the Official Authentication and Grading Service of Baltimore Comic-Con.

As the show gets closer, look for updates on what CGC and JSA have planned as well as details about submitting for on-site grading.