This Mother's Cookies Oakland A's 4-card strip has been hand signed by Mark McGwire. The item includes authentication from PSA/DNA.
Mark McGwire Autographed Mother's Cookies Oakland A's 4-Card Strip
1988 Mother's Cookies Mark McGwire Baseball - Gallery
Legends Clothing Blog – Legends Clothing Co.
4 Card Set of Personal Information and Stats with SUPER ULTRA LAMINATED HIGH GLOSS FINISH. Photographed by an outstanding Photographer, Barry Colla
1989 Mothers Cookies MARK McGWIRE Set of 4 Cards, Oakland A's Set B02105411
Paul Lindblad Cardboard Gods
June 2009 Catalogue - Sports Memorabilia Auctions
Mark McGwire Autographed Autographed Cards, Signed Mark McGwire Inscripted Autographed Cards
Mark Mcgwire Psa Dna Coa Autograph 1987 Mothers Cookies Rookie Hand Signed Auction
ckamka – SABR's Baseball Cards Research Committee
PSA 9 1987 Mother's Cookies Mark McGwire Batting Follow Through
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Bob Watson, architect of the 1996 Yankees, battling kidney failure — and a forgotten legacy – New York Daily News
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mark mcgwire 1991 Values - MAVIN