The product being described is a Linda Blair signed Exorcist Regan floating 1934 Funko Pop, accompanied by a JSA COA CH52678 certificate of authenticity. As a key piece of entertainment memorabilia, this item appeals to movie collectors and fans of The Exorcist film. The autograph adds value and uniqueness to the item, making it a desirable and cherished item for fans of Linda Blair and the iconic horror film.