Police later confirmed it was authentic, according to ESPN.
Lower Merion coach Gregg Downer told The Associated Press that the return of Bryant's jersey to the school was "good timing."
"That was kind of an iconic moment, when the spotlight went on that jersey. It was just tremendous," he said. "It was major irony, almost, how we’ve been waiting for that jersey for a long time. For a long time we didn’t know where it was. To have it back, it’s a fitting ending to a tough week.”
Lower Merion won Saturday's game against Souderton High School 42-37 in overtime, according to the Bleacher Report.
Bryant, 41, and his 13-year-old daughter, Gianna “Gigi,” were killed along with seven others in a helicopter crash in Southern California on Jan. 26.
Also killed in the crash were Orange Coast College head baseball coach John Altobelli; Altobelli’s wife, Keri; Altobelli’s daughter, Alyssa; Harbor Day School assistant basketball coach Christina Mauser; Sarah Chester; Chester’s daughter, Payton; and helicopter pilot Ara Zobayan.