Mint Never Hinged / Full Gum / No Creases. Photos are of the exact stamp you will receive. Our cart and pay through your cart.Follow WTDstamps - New listings are added daily. 1940 National Wildlife Federation Stamps. New listings are added daily. The item "WTDstamps #RW15 1948 Plate# Block US Federal Duck Stamp Mint OG NH" is in sale since Wednesday, April 22, 2020. This item is in the category "Stamps\United States\Back of Book\Duck Stamps". The seller is "whattheduckstamps" and is located in Detroit Lakes, Minnesota. This item can be shipped worldwide.