Illinois Duck Stamp 1980 featuring the Green-winged Teal, Scott #IL6, in VF/XF (Very Fine/Extremely Fine) Mint Never Hinged (MNH) quality. This multi-color stamp from the United States showcases a beautiful image of a pair of Green-winged Teal drakes in flight. A must-have for duck stamp collectors--one of the rarest Illinois duck stamps. Michael Jaffee lists this in his 2019 with a catalog value of US$110 = CAD$150.