500 Homerun Club signed baseball with 12 autographs including Mickey Mantle and Ted Williams. Sparkling white ball has Jackson and Aaron on the sweet spot, with Mantle, Williams, Mays, Banks, Murray, Robinson, Mathews, Killebrew, Schmidt and McCovey the other bombers on this Bart Giamatti NL baseball. Signatures are 8-10s overall, with Mantle and Williams being 9s. Condition is a solid Near Mint to Mint.