Welcome to GM Authentic Autographs. Be sure to added us to your favorite sellers list… We add new inventory weekly! We travel the county to attend events, movie screenings, film festivals and various other events to be able to provide our customers the best autographs for their collections. Every single item comes with a Certificate of Authenticity from GM Authentic Autographs. Some items may also come with additional authentication through proof photos (when available) or certification from leading TPA’s such as Beckett, PSA/DNA or JSA! Specific signing details available upon request. James Spence (JSA) Letter of Authenticity. For any item that is not already James Spence (JSA) Certified, we can. Have that service provided for an additional charge.