Ryne Duren New York Yankees Autographed OAL Baseball JSA COA Bleacher Seat Kristaps Porzingis New York Knicks

Kristaps Porzingis New York Knicks Autographed Signed 16x20 Spotlight Dunking Photo (Steiner Auth)

has been encapsulated and slabbed by Beckett Authentication Services (BAS)

authenticated by Beckett Authentication Services (BAS) with authentication number 00016504222

This Jerry Royster Atlanta Braves 1999 SI Greats of the Game card boasts an authentic autograph from the player himself

Ryne Duren New York Yankees Autographed OAL Baseball JSA COA Bleacher Seat Kristaps Porzingis New York KnicksThis Official American League Baseball is signed by Ryne Duren of the New York Yankees. Authenticated by JSA and accompanied by a COA.