Muhammad Ali autographed 4'' x 4'' paper hand signed in ball point pen from 1984. This Ali signature has been certified authentic by JSA James Spence Authentication and will come with the full letter of Authenticity that has been notorized. You can look the number up online stating that it is a authentic Muhammad Ali signature at the JSA website. Buy with confidence we have been selling in-person autographs and memorabilia since 1992.  Boxing