unused Block Larger Than four A collection, mostly comprising corner blocks of four showing sheet number and/or plate number, several shades and including 10c. (30), 20c. red (6), 25c. blue (10), 50c. (17) with reddish purple, $1 lilac and blue (6) and $1 red-orange and green (4); majority are unmounted or mounted in margin only, a scarce and useful assembly. (192)