Large 4” from 1974 to promote “St. John’s” toothpaste whose name appears on Ali’s waistband. To the right is cartoon villain with various tools. Ali looks at him and says “Hey Kids! Our Next Big Fight’s Mr. Toothdecay.” There is a related LP record and album cover with Ali and this same Mr. Toothdecay cartoon. Both were part of the campaign. Center blue bkg. has 1/8” circular air dot that will catch reflected light but surface is exceptionally clean and free of surface wear. Silvered back has just a touch of luster gone. N. Mint, displaying Mint and the best full color vintage Ali button known.