Cleaning out my attic today, I came across a framed photo of Frank Shorter and Bill Rodgers running together in conjunction with the "Orthopaedic Hospital of Charlotte 10K Challenge" from Jan. 2, 1988. It was billed as the first time they raced each other as masters. The photo is autographed by both, and semi-personalized to me. Shorter wrote "Happy Running!" and Rodgers wrote "See you on the roads!"
I had forgotten I had the thing. I'm not a collector by any means and am not looking to sell this, but was wondering what its monetary value is.