unused Block Larger Than four 20c Parcel Post (Q8), L. plate no. 6194 block of six, full side selvage, post office fresh and crisp, very minor perf. strengthening (not readily apparent) precludes this from being never hinged, four stamps are never hinged, fine-very fine, a key Parcel Post plate no. block, rare especially in this quality, Scott retail $6,000.00 photo