The product is a Mark McGwire signed and inscribed "98" autographed Official National League (ONL) Baseball from the 1998 season. This authentic baseball features a signature from the St. Louis Cardinals player, making it a valuable collector's item for fans of baseball memorabilia. The autograph has been authenticated by James Spence Authentication (JSA), ensuring its legitimacy and adding to the overall appeal of the product. Displaying this historic piece of sports memorabilia is sure to be a prized possession for any baseball enthusiast.  Strong signature in blue pen ink, JSA Cert #AR15719, signed in person on 9/13/98 at Astrodome, note states "Mark had 62 HR's at/on this date", comes from Gene Pemberton collection, longtime Houston Astros staff member.