1986 Metal South Dakota waterfowl restoration $2 stamp pin-Ducks unlimited green wing pin. 1988 waterfowl signed art print by artist Marion Toillion. 1991 waterfowl signed art print by artist Russ Dickerson. 1993 waterfowl signed art print by artist Mark Anderson. All 3 prints are limited editions with $2 South Dakota Waterfowl Restorations Stamp in corporation with Ducks Unlimited.