Seattle Mariners Ken Griffey Jr. Autographed White Nike Jersey (Size XL) - Beckett BAS Witness Authentic Bo Jackson and the game helmet

and the game helmet

The MLB Authentication Program is the highest authentication tier available in baseball memorabilia: every signature carrying an MLB hologram was applied in the physical presence of a Major League Baseball-employed authenticator — typically a current or former law enforcement officer recommended for the role by their local police department — and verified on the league's official online database with a unique alphanumeric code traceable at MLB

ideal for display cases

Roger Staubach signed Dallas Cowboys Salute to Service Riddell speed mini helmet

Hand-signed by Hall of Fame DE Jason Taylor

Seattle Mariners Ken Griffey Jr. Autographed White Nike Jersey (Size XL) - Beckett BAS Witness Authentic Bo Jackson and the game helmetThe Kid's Iconic Legacy: Ken Griffey Jr. Signed White Nike Seattle Mariners Jersey (Size XL) Own an absolute blue chip asset from one of the most culturally significant and universally beloved athletes in sports history with this white Nike Seattle Mariners jersey, hand signed by first ballot Hall of Famer, Ken Griffey Jr. Famed for his backward cap, infectious smile, jaw dropping defensive robberies, and arguably the most beautiful, effortless swing