The autograph was witnessed and authenticated by a Beckett representative as part of their Beckett Authentication Services. The serial number can be
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Troy Polamalu Pittsburgh Steelers Autographed 2003 Bowman #257
Troy Polamalu Autographed Football Memorabilia & NFL Merchandise
Troy Polamalu Autographed Football Memorabilia & NFL Merchandise
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Troy Polamalu Autographed Football Memorabilia & NFL Merchandise
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Troy Polamalu Autographed Football Memorabilia & NFL Merchandise