unused Block Larger Than four 10c Dark Ultramarine special delivery (E8), T. imprint and plate no. 5514 block of six with full selvage, stamps never hinged, all three B. stamps the op frame line missing varieties, some light perf. strengthening solely in the vertical rows of perfs. in the selvage, otherwise very fine, very attractive and a desirable special delivery plate variety, Scott retail $2,250.00 photo