This bonus baby offered incredible potential, but who knew Sandy Koufax would go 129-47 with a 2.19 ERA, four no-hitters including a perfect game, and win three Cy Youngs, an MVP and three World Series to end his career. This 1956 Topps #79 Sandy Koufax autographed issue has been signed by Sandy in blue Sharpie, which PSA/DNA has deemed GEM MINT 10. The Left Arm of God has marked this "3XCY 63 65 66"!