
Mark McGwire & Sammy Sosa Autographed Official MLB Baseball (Smudged) Beckett BAS Witness #3W367066
Mark McGwire & Sammy Sosa Autographed Official MLB Baseball (Smudged) Beckett BAS Witness #3W367066
Collector-Grade autographed memorabilia—this Official MLB baseball is signed by Mark McGwire and Sammy Sosa and comes authenticated on-site by Beckett (BAS Witness #3W367066). Their 1998 home run race gripped the sport, with McGwire setting a then-record 70 HRs and Sosa belting 66 while winning the NL MVP. Both joined the 500 Home Run Club; McGwire was the 1987 AL Rookie of the Year, and Sosa remains the only player with three 60-HR seasons.
Collector's Highlights:
- Athletes: Mark McGwire & Sammy Sosa
- Item: Official MLB Baseball – dual-signed (note: signature smudge visible as pictured)
- Authentication: Beckett Authentication Services (BAS) Witnessed Hologram #3W367066
This dual-signature ball is verified authentic by Beckett’s Witness program, giving you a piece tied directly to the most electric home run chase in modern baseball. The BAS hologram secures the legitimacy of the signatures and supports long-term collectibility for serious fans and memorabilia buyers.
Original: $179.00
-65%$179.00
$62.65More Images




Mark McGwire & Sammy Sosa Autographed Official MLB Baseball (Smudged) Beckett BAS Witness #3W367066
Collector-Grade autographed memorabilia—this Official MLB baseball is signed by Mark McGwire and Sammy Sosa and comes authenticated on-site by Beckett (BAS Witness #3W367066). Their 1998 home run race gripped the sport, with McGwire setting a then-record 70 HRs and Sosa belting 66 while winning the NL MVP. Both joined the 500 Home Run Club; McGwire was the 1987 AL Rookie of the Year, and Sosa remains the only player with three 60-HR seasons.
Collector's Highlights:
- Athletes: Mark McGwire & Sammy Sosa
- Item: Official MLB Baseball – dual-signed (note: signature smudge visible as pictured)
- Authentication: Beckett Authentication Services (BAS) Witnessed Hologram #3W367066
This dual-signature ball is verified authentic by Beckett’s Witness program, giving you a piece tied directly to the most electric home run chase in modern baseball. The BAS hologram secures the legitimacy of the signatures and supports long-term collectibility for serious fans and memorabilia buyers.
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Description
Collector-Grade autographed memorabilia—this Official MLB baseball is signed by Mark McGwire and Sammy Sosa and comes authenticated on-site by Beckett (BAS Witness #3W367066). Their 1998 home run race gripped the sport, with McGwire setting a then-record 70 HRs and Sosa belting 66 while winning the NL MVP. Both joined the 500 Home Run Club; McGwire was the 1987 AL Rookie of the Year, and Sosa remains the only player with three 60-HR seasons.
Collector's Highlights:
- Athletes: Mark McGwire & Sammy Sosa
- Item: Official MLB Baseball – dual-signed (note: signature smudge visible as pictured)
- Authentication: Beckett Authentication Services (BAS) Witnessed Hologram #3W367066
This dual-signature ball is verified authentic by Beckett’s Witness program, giving you a piece tied directly to the most electric home run chase in modern baseball. The BAS hologram secures the legitimacy of the signatures and supports long-term collectibility for serious fans and memorabilia buyers.
























