NOTE: This description has been modified to reflect that the ball is actually an OAL MacPhail ball, not an OAL Brown ball as the catalog states.
The incomparable "M & M Boys" are the sole inscribers of this dual-signed Mantle and Maris OAL MacPhail baseball. This circa 1984 sphere is penned by Mantle on the sweet spot ("7-8") while Maris's weighty endorsement is placed directly on the south panel ("8"). The off-white ball displays uniform toning and grades ("6"). Full photo LOA from JSA.