Mark McGwire autographed Beckett Baseball Magazine with JSA authentication

That convention guy collectibles brings you an amazing baseball collectible.  This Beckett magazine highlights some of the best baseball homerun hitters in history including Babe Ruth, Hank Aaron, Willie Mays and Mark McGwire.  This magazine has been signed by Mark McGwire.

Item is authenticated by JSA, a leader in 3rd party autograph authentication.  So you don't have to take my word for its authenticity.  Check out the certificate on their website with the matching card.