unused Block of Four 1c-9c Kans.-Nebr. overprints (betw. 658-678), eighteen plate no. blocks of four, eleven different, better items incl. Kans. 4c (two), 5c, 6c (two) and 9c, also Nebr. 6c and 9c, a few never hinged, three have P.O. pencil or h.s. notations in the selvage, few have small faults, usual mixed centering for this issue, very good-fine lot, Scott retail $1,715.00 est.