Three different commemorative covers, each bearing a cachet celebrating the baseball centennial, signed in fountain pen and ballpoint by 19 members of the 1939 Yankees, including: Joe DiMaggio, Frank Crosetti, Lefty Gomez (2), Joe McCarthy, Red Ruffing, Bill Dickey, Charlie Keller, Tom Henrich (2), Babe Dalgreen, Red Rolfe, and Johnny Murphy. Also signed in fountain pen by baseball’s Clown Prince, Al Schacht. In fine condition, with mild overall toning to one cover. Auction LOA Steve Grad/PSA/DNA and R&R COA.