The product is a Mariano Rivera signed 1999 World Series ticket stub, authenticated by Professional Sports Authenticator (PSA). This collectible item is a piece of baseball history from the New York Yankees pitcher's clincher MVP season. The autograph adds value and uniqueness to this original memorabilia from the 1999 World Series. Perfect for fans of Mariano Rivera or the New York Yankees, this ticket stub is a prized possession for any baseball enthusiast.