Baseball legend Mickey Mantle endorsed in strong blue ballpoint pen this check made out to him by the Yankees on August 9, 1978. Less than two weeks earlier, the franchise celebrated Old Timers' Day in the Bronx, and Mantle was an invited guest, and this check could very easily represent The Mick's compensation for that appearance. The signature is encapsulated and graded MT 9 by PSA/DNA. The colorful bank check with red & blue Yankees logo was cashed on August 22 at Mantle's bank in Dallas and has some corner wear but still displays beautifully.