2.25” litho includes his facsimile signature plus text “’31’ Wins With Wilson.” Curl of button carries sponsor’s name “Wilson Sporting Goods Co.” 1968 was a great year for him as he went 31-6, was on the All-Star team, won the Cy Young Award, was American League’s most valuable player and contributed greatly to the Detroit Tigers winning the World Series. Button has 2 pinpoint paint dots off extreme top edge barely showing from the front and overall about 99.9% Mint. Rare.