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Featuring the personal collection and archive of autograph expert, collector and TV personality Steve Grad

Barry Bonds Signed 1991 Donruss Diamond Kings Card PSA/DNA EX-MT 6
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This is a Barry Bonds autographed 1991 Donruss Diamond Kings #4 trading card, professionally slabbed and authenticated by PSA/DNA and the card has been graded EX-MT 6. The card features Bonds in his Pittsburgh Pirates uniform and showcases a bold, clear signature.


About the signer: Barry Bonds is one of the most accomplished players in baseball history, holding the all-time Major League record for home runs. A seven-time MVP and 14-time All-Star, Bonds is regarded as one of the greatest hitters the sport has ever seen.


  • 1991 Donruss Diamond Kings #4 trading card featuring Barry Bonds
  • Obtained in person in March of 1991 by Steve Grad in spring training at the Pittsburgh Pirates training facility in Bradenton, Florida. 
  • Hand-signed autograph authenticated by PSA/DNA and graded EX-MT 6.
  • Slabbed for maximum protection and authenticity
  • Perfect collectible for Pittsburgh Pirates and MLB fans
  • From the prestigious Steve Grad Autograph Collection – Steve Grad has been a regular cast member on the History Channel’s Pawn Stars since 2013, the lead authenticator at BECKETT Authentication, and former Principal Authenticator at PSA/DNA (2002–2016)

A must-have Hall of Fame caliber collectible for any serious baseball memorabilia collection!

Steve Grad has been a regular cast member on the History Channel's Pawn Stars since 2013. He is the Lead Authenticator at Beckett Authentication Services and formerly served as Principal Authenticator at PSA/DNA.
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About Us

From the personal Star Wars autograph collection of Steve Grad. A lifelong autograph collector, professional autograph authenticator and the autograph authentication expert for History Channel's Pawn Stars since 2013.