unused Block Larger Than four Blocks, 20th Century, accumulation of blocks and plate no. blocks, incl. no. 619 plate no. block of six, 620 T. double plate no. block of sixteen, 647 irregular plate no. blocks of 32 and 51, 650 block of 36 with two plate no. blocks, few faults to be expected, otherwise fine-very fine, Scott retail approx. $3,500.00est.