unused Block of Four 1c-$1.00 1917 Issue (498, 499, 502-504, 506-518), blocks of four, all values represented, fresh, some values incl. 50c and $1.00 never hinged, 4c and 15c T. pairs have thins, two 20c have natural gum crease, otherwise fine-very fine lot, Scott retail as hinged $1,668.20+ photo ex