Came from Old Time Maryland area collector who went to shows and obtained many of the signatures in person. Many of the balls come with original paperwork/authentication. Includes: Mantle (Budig), Koufax, T. Williams (Green Diamond), Aaron, Mays (2), Griffey Jr (2), R. Johnson, Yastrzemski, R. Jackson, Schmidt, F. Robinson, McCovey, Mathews, Clemens, Banks, Gwynn, Maddux, Bonds, F. Thomas, Molitor, Brock, Rose, Ripken Jr, Carew, Murray, Boggs, Brett, McGwire, Yount, Henderso, and more. The Koufax is a hand painted ball signed on the sweet spot. All baseballs are Official American or National League, rating overall EX-MT condition. Signature strength averages 7/10.