Phil Mickelson Signed Golf Ball 

And here it is - the most elusive modern golf autograph there is - an authentic signed Phil Mickelson golf ball. Phil Mickelson is arguably the most popular golfer of his generation. He also happens to be one of the most willing signers - frequently signing flags and hats and programs for hours on end. But there is one item that Phil absolutely refuses to sign: golf balls. It doesn't matter if you're his good friend or even if you work for Callaway, Mickelson simply won't sign golf balls and hasn't in many years. 

Therefore, the only way to even have a chance at finding an authentic Phil Mickelson signed golf ball is to locate one from very early in his career. 

Without further ado, we bring you an authentic Phil Mickelson golf ball, which Phil himself hand-dated January 6, 1993. 1993 was Phil's 2nd year as a professional. 

The offered Phil Mickelson autographed Titleist ball is unquestionably one of the finest Mickelson balls in existence.

Letter of Authenticity from Green jacket Auctions. 

Both JSA and PSA have seen the ball and have been unable to render an opinion. That means they do not have sufficient exemplars or are not 100% sure to call it one way or the other.