Lot 781
781
AIR POST--POSTAGE DUES
unused Block Larger Than four 1939, 5c-$1.00 Air Post (C15-C20), plate no. blocks of six, 10c B. margin, all others T. margin, full o.g., fresh and fine-very fine set, Scott retail $847.50est.

Details
unused Block Larger Than four 1939, 5c-$1.00 Air Post (C15-C20), plate no. blocks of six, 10c B. margin, all others T. margin, full o.g., fresh and fine-very fine set, Scott retail $847.50est.