Here is an old ESPN article that helps contribute to the "myth"
http://www.espn.com/sportsbusiness/s...8/1403337.html
But it is well known in the sports-collectibles community that Ted Williams' signature is among the most-forged, prompting some dealers to caution collectors about the so-called authenticated items, as well. Phil Castinetti, owner of New England-based Sportsworld, believes that even some Williams autographs authenticated by the slugger's son might be forgeries.
"There's no way all the stuff that has come from his companies is legit," Castinetti said of the volume of paraphernalia the younger Williams has sold to dealers over the years. "I would bet my life that there are autographs that he has authenticated and sold that he signed himself."
Castinetti said two experiences cause him to question the authenticity of signatures authenticated by John Henry Williams. In 1991, Castinetti said John Henry showed him the perfect Ted Williams signature. "John Henry and his partner Brian Interland would sign 'Ted Williams,' " Castinetti said, "and they'd laugh, because you couldn't tell theirs and Ted's apart."
Then in 1999, Williams made his final public appearance at the All-Star game at Fenway Park. "I saw him sign there, and he could barely write; his signature was a scribble," Castinetti said. "Then the next week, I see signed panoramic photos of the moment authenticated by Green Diamond, and the signature was flawless."