unused Block Larger Than four 1873, 40c Brown Violet, 50c Ultramarine (196, 197), unused block of twenty (5x4) of former and unused block of twenty-four (8x3) of latter, both blocks have o.g., slight toning on the 40c block and some natural inclusions in the 50c block, few light bends still fine-very fine, Scott retail $690.00