Bill Mazeroski's legendary, game-winning walk-off home run in Game 7 of the 1960 World Series—which clinched the championship for the Pittsburgh Pirates over the New York Yankees—is one of the most famous moments in baseball history. Immediately following the dramatic play, the historic baseball vanished into the ecstatic crowd as fans stormed the field in celebration. Despite decades of searching, public inquiries, and rumored sightings, the true authentic ball has never been definitively recovered, adding to the mystique of the historic sporting artifact.