1989 A's Mother's ROY's #4 Walt Weiss/Mark McGwire/Jose Canseco - NM-MT
1989 A's Mother's ROY's #4 Walt Weiss/Mark McGwire/Jose Canseco - NM-MT
Baseball Autographs- Sports Card and Sports Memorabilia Auctions
Calaméo - 2016 August
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