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Featured is a Mark McGwire signed St. Louis Cardinals mini batting helmet. This helmet was hand signed by Mark McGwire and authenticated by Beckett
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Mark McGwire Signed Cardinals Mini-Helmet With Display Stand (Radtke)
Featured is a Mark McGwire signed St. Louis Cardinals mini batting helmet. This helmet was hand signed by Mark McGwire and authenticated by Beckett
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1998 Upper Deck Kodak 3D Hologram Baseball Card Mark McGwire Hits 62nd Home Run