Golf Autographs -- Palmer, O'Meara, Baker-Finch, Mickelson -- What are they worth?

I found in my attic three autographed passes to the inaugural President's Cup golf tournament from 1996. One has Arnold Palmer's original autograph, one has Mark O'Meara and Ian Baker Finch, and one has Phil Mickelson (its hard to make out, it might be Fred Funk). Can I sell these on E-Bay? What would they be worth?