The hilarious Who’s on First routine on both sides of a 10″ diameter 78-rpm, signed by Bud Abbott and Lou Costello in blue ink on the record’s label, which reads, “Abbott and Costello’s ‘Who’s On First?’ Presented To National Baseball Hall of Fame Museum, Cooperstown, N.Y. 1956.” In fine condition, with expected scratches to record. COA PSA/DNA and R&R COA.