DWIGHT CLARK AUTOGRAPHED/SIGNED SAN FRANCISCO 49ERS 16X20 PHOTO 21123 BAS This is a 16x20 photo that was personally autographed by Dwight Clark. Clark's catch was one of the most remarkable catchers in NFL history against the Cowboys to advance to the Super Bowl. This item includes a certificate of authenticity from Beckett Authentication (BAS) and Denver Autographs.