I found this button a few weeks ago at a nearby antique shop. It's a 4-inch pin commemorating Mickey Mantle Day on June 8, 1969 (just about 2 years after Whitey Ford retired). Mantle had retired during spring training that year, after 18 seasons in Yankees' pinstripes.
I've never been a Yankees fan, but (like just about every kid from my generation, I would guess,) I've always been a Mickey Mantle fan.
A few days later, I found out it was a re-issue made in the 1980s, but that's ok.