Incredible Sandy Koufax hand Signed Official MLB Baseball Dodgers 3 Cy Young years hand written out by Koufax bold mint clean Autograph Fanatics and MLB COA. Certified Hand signed in bold blue on the sweet spot of the ball and inscribed "63,65,66 CY". Koufax won the NL Cy Yount award in 1963, 1965 and 1966. One of the best pitchers ever... domination !!! Hall of Famer. Rawlings official baseball. Great inscription you GET THIS EXACT BASEBALL RARE INSCRIPTIONS !!!