Football NFL 1989 Pro Set #464 Mark Duper #464 NM Dolphins : Collectibles & Fine Art
125 Mark Duper Dolphins Stock Photos, High-Res Pictures, and Images - Getty Images
Mark Duper & Mark Clayton Signed Dolphins The Marks Brothers 16x20 Custom Matted Photo Display (SOP COA)
Mark duper hi-res stock photography and images - Alamy
Mark duper hi-res stock photography and images - Alamy
1991 Wild Card NFL Football #16 Mark Duper Miami Dolphins Official NFL Trading Card From The AAA Sports Company : Collectibles & Fine Art
Madison Ave. with The Marks Brothers
Mark Duper Football Cards
Draft Memories: Mark Duper
125 Mark Duper Dolphins Stock Photos, High-Res Pictures, and Images - Getty Images
240 Mark Duper Photos & High Res Pictures - Getty Images
1990 Fleer #239 Mark Duper NM-MT Miami Dolphins Officially Licensed NFL Football Trading Card : Collectibles & Fine Art