unused Block of Four 1c-$1.00 1917 Issue (498, 499, 501, 503, 504, 506-509, 511-518), blocks of four, incl. extra 12c shade, nearly all lightly hinged, all B. pairs except 20c are never hinged, one 3c, 13c, 15c and 20c have minor faults, otherwise fine-very fine lot, Scott retail $1,870.00