Featured is a Mariano Rivera signed New York Yankees Majestic authentic baseball jersey, in which he added the "1st Unanimous HOF" inscription. This jersey was hand signed by Mariano Rivera and authenticated by JSA authentication services. Included with the jersey is a JSA hologram and certificate of authenticity. This jersey would make a great addition to any sports memorabilia collection. SPECIFICATIONS Autographed By: Mariano Rivera Team: New York Yankees Sport: Baseball Authentication: James Spence Authentication (JSA)