The product is a signed Dallas Mavericks jersey by basketball player Derek Harper, with inscriptions of "#12 Retired 1/7/18" and "Go Mavs". The autograph is authenticated by Beckett Authentication Services (BAS), making it Legit. This collectible item would be a valuable addition to any NBA basketball fan's memorabilia collection, showcasing a piece of history from the Dallas Mavericks.
eBay