Up for sale is a signed Mark McGwire MLB Baseball. Signed before a game in 2017. Item comes with a coa from JSA! We obtain all of our autographs in person or thru private signings and guarantee the autehnticity of each. We are so confident our autographs are authentic that will be reimburse you 110% if otherwise. If youd like your item jsa authentic, we can do this at their regular prices for you. Great Item for any A's or cards Fan!
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