The product is a Sanday Koufax signed Rawlings Official Major League Baseball with a JSA Letter of Authenticity and COA from the Hall of Fame. This baseball holds significant value for collectors and fans of the baseball legend, Sandy Koufax. The authenticity of the signature and the inclusion of the JSA Letter and COA add to the legitimacy and appeal of the item. It is a prized piece for any baseball memorabilia enthusiast looking to add a piece of sports history to their collection.