If there's an underrated member of the 500 Home Run Club, it might just be Eddie Mathews. An absolute monster at the plate, he was an RBI machine for Milwaukee Braves for many years and also a somewhat forgotten member of the 1968 Detroit Tigers World Series champs. This is a fairly graded PSA 6 of his 1963 stat back Exhibit and you can see the determination on his face, even in this posed shot. PSA has graded 37 of these, with only 6 higher.