Store › MO11 Missouri 1989 Ring-necked Ducks Duck Stamp Image 1 of 1 MO11 Missouri 1989 Ring-necked Ducks Duck Stamp Sale Price: $2.50 Original Price: $4.00 Missouri Department of Conservation Waterfowl StampSKU: 2539-MO11 Add To Cart Added! Missouri Department of Conservation Waterfowl StampSKU: 2539-MO11