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Matt Cain & Sergio Romo ADD Autographs on 2010 World Series on Game 2

Ken Griffey Jr Autographed Hall Of Fame Gateway Stamp Envelope w/ Cooperstown Postmark

Edgar Martinez Un-Signed Hall Of Fame Gateway Stamp Envelope w/ Cooperstown Postmark - Seattle Mariners

Edgar Martinez Autographed Hall Of Fame Gateway Stamp Envelope w/ Cooperstown Postmark - Seattle Mariners

Ken Griffey Jr Un-Signed Hall Of Fame Gateway Stamp Envelope w/ Cooperstown Postmark

Phil Humber Perfect Game Un-Autographed Gateway Stamp Envelope - Chicago White Sox vs Seattle Mariners

Rickey Henderson Autographed Hall Of Fame Gateway Stamp Cachet Envelope

Alex Rodriguez & Nomar Garciaparra Autographed 2000 All-Star Premier Shortstops – Picturing Jeter, Rodriguez & Garciaparra

Ken Griffey Jr and Ken Griffey Sr Autographed Father / Son Teammates Gateway Stamp Cachet Envelope

Alex Rodriguez Autographed 500 Home Runs Gateway Stamp Cachet Envelope - New York Yankees

Adrian Beltre Autographed 3,000 Hits Gateway Stamp Cachet Envelope Cover

Adrian Beltre Autographed Hall Of Fame Gateway Stamp Cachet Envelope Cover

Adrian Beltre Unsigned Hall Of Fame Gateway Stamp Cachet Envelope Cover

Adrian Beltre Unsigned 3,000 Hits Gateway Stamp Cachet Envelope Cover

Kevin Millwood No Hitter Autographed Gateway Stamp Envelope - Philadelphia Phillies

Kevin Millwood No Hitter Un-Signed Gateway Stamp Commemorative Cachet Envelope - Philadelphia Phillies

Jamie Moyer Autographed Oldest MLB Winning Pitcher Gateway Stamp Envelope - Colorado Rockies

Jamie Moyer Autographed Wrigley Field Legendary Playing Fields Gateway Stamp Envelope - Chicago Cubs (1986-1988)

Jamie Moyer Autographed Oriole Park at Camden Yards Gateway Stamp Envelope - Baltimore Orioles