Kirk Gibson Forum

I have a 1988 classic superstars photo of Kirk Gibson that is an original signature from when he was with the Dodgers. I am having some difficulty finding any information online about what it could possibly be worth. Does anyone have any educated guesses? 

 It won't be much.  Checking on eBay, he's got certified, pack-issued autographed cards that sell for under $10.  Then he's also got some that went for $40.  There are a bunch of in-person or TTM autos that didn't sell at all, listed around $10.