: Professional grading and authentication services like PSA or JSA are critical; authenticated items command significant premiums over uncertified ones.
: Heavily focused on sports (75%) , followed by musicians (12.2%), and movie/TV stars (8.6%). who buys autographs
: Driven by personal passion, nostalgia, and a desire to own a tangible link to cultural idols. : Professional grading and authentication services like PSA