From the other "men in the masks," these 14 multi-signed baseballs are of 1940s-50s American & National League umpires. Included are: Nestor Chylak (HOF), Al Barlick (HOF), Cal Hubbard (HOF), Doug Harvey (HOF), Augie Donatelli, Scotty Robb, Tom Gorman, Bill McKinley, Shag Crawford, Warren Giles and more. Official National League baseballs, average of 15+ sigs per ball, with balls averaging EX-NM condition. Sigs average 7/10 with few that are overall NM. Nicely preserved, they come in Spalding Reach ball bags with some handwritten inventory numbers on balls from the massive team-signed baseball collection of John O'Connor.