1863, 2¢ black, Off-Center Extremes. 6 used stamps including pair and 3 covers, all showing large shifts with portion of adjacent stamps showing; covers from Boston, Mass., Washington D.C. and Oskaloosa, Ioa. with pair, also includes two additional "Pygmy" perf'd singles; some flaws, Fine. Scott No. 73  Estimate $100 - 150. $0 (Image)