Mystery Grab Box - Dallas Mavericks NBA Basketball Autographed Ball Tom Glavine Own a piece of history

Own a piece of history and show your support for the team with this navy-blue jersey signed by the star goaltender himself

Certified by JSA

personally autographed by the Hall of Famer

featuring Portis's signature on official Hurricanes headgear

The suspense the surprise the reveal - Dawg Nation can't get enough

Mystery Grab Box - Dallas Mavericks NBA Basketball Autographed Ball Tom Glavine Own a piece of historyDallas Mavericks NBA Mystery Grab Box Autographed Basketball 1 Autographed Basketball Are you ready to experience the ultimate thrill for any Dallas Mavericks fan and NBA memorabilia collector? Introducing the Palm Beach Autographs Dallas Mavericks Mystery Grab Box your chance to own an autographed basketball with one exciting catch: you won't know which player you're getting until you tear it open! Since launching our fan favorite Mystery Grab Box