Reggie Jackson earned the nickname "Mr. October" by blasting three home runs in Game 6 of the 1977 World Series, a performance that clinched the title and cemented his postseason legend. Derek Jeter claimed his own version of the moniker in 2001, when a walk-off homer just after midnight on November 1 made him the first player to homer in that month of a World Series. This autographed baseball is hand-signed by both Yankees legends and inscribed "Mr. October" and "Mr. November," pairing two generations of clutch postseason performers on a single piece.