The legendary Yankee slugger's autograph is one of the most distinctive and highly coveted markers in the memorabilia business and The Mick made instant collectibles out of these New York Yankee and Chicago Bear caps by penning his signature in black marker on the green underside of the bills. Especially desirable is the blue and white Yankee lid, recalling the 17 glorious seasons he wore the famous "NY" logo cap. Mantle's signature is big and bold on both caps, rating 7s. The Bear cap is blue with orange lettering. Both caps are in excellent condition.