11, 1856 3c Brownish carmine,, margins full to just touching at bottom right, tied by perfect "Chicago Ill. Ju 19 1857" datestamp on cover to Macomb, Illinois, beautiful illustrated advertisement for "Prairie Farmer Works" with horse-drawn "self-raking reaper and mower", extremely fine and fresh, an outstanding illustrated cover, ex-Morton, 2012 Philatelic Foundation certificate (Image)

CV.