This Autographed Auto Graded Mint 9 October 21, 1975 World Series Game 6 Ticket Stub with the inscription of "12th Inning Walk Off HR, Stay Fair! Stay Fair!" has been Personally Signed by Carlton Fisk of the Boston Red Sox. This item is 100% Authentic, it comes slabbed and authenticated by PSA/DNA. The authenticity can be verified on Professional Sports Authenticator website.