Bidspirit auction | United States - Modern Errors

United States - Modern Errors and Varieties - 1986, Father Flanagan, 4c deep grayish blue, side margin block of 20 (10x2), block of four on the left has all color missing, third vertical pair at left has missing ¼ of the design, full OG, NH, VF and scarce, Scott priced this error with ''-'', Est. $600-$800, Scott #2171d