Simpson made the unexpected appearance at Rosemont's 26th annual National Sports Collectors Convention, and while excited fans crowded him, disgruntled organizers soon asked him to leave.
But before his departure, Simpson signed 115 autographs--at $100 and $125 apiece--during his 75 minutes at the event, as well as posing for several photographs.
He later signed hundreds of autographs at a nearby hotel. Dealers at the event are not allowed to have unscheduled autograph appearances.
Convention director Bob Dyer says of Simpson, "The demand for his autograph was obvious based on the crowd around him, but you can't go around doing it that way. The exhibitor didn't abide by the contract."
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