unused Block of Four Plate Blocks, 1909-40, 68 different plate no. blocks of four or six, better items incl. nos. 367, 370, 372, 537, 611, 612, 628, 647, 648, 704-715, 859-893, also incl. no. 550 margin block of six (not a plate block), some have faults, otherwise very good-very fine lot, Scott retail $2,884.85