It's not really officially Mickey Mantle Day until the Mayor of New York City says it is. Large and elegant certificate makes note of the highlights of the Mick's career before stating, "…Therefore, I, John V. Lindsay, Mayor of the City of New York, Do Hereby Proclaim June 8th, 1969, as 'Mickey Mantle Day.'" Lindsay's signature is VG-EX at bottom. From a proud place on the wall of Mantle's trophy room. EX.