One of the finest existing Mickey Mantle and Roger Maris dual-signed baseballs. The Official AL (MacPhail) ball displays some minor spotting but is otherwise in Excellent condition. Mantle signed on the sweet spot in blue ballpoint ink with Maris on a side panel, also in blue ink. PSA LOA included, graded 8 overall: Maris signature grades perfect 10, Mantle grades 9, ball grades 7. Tremendous memento of the M&M Boys.