unused Block Larger Than four 10c Blue special delivery (E5), B. imprint and plate no. 77 block of six, stamps o.g, two are never hinged, two stamps have light natural paper wrinkle, extensive separation in the vertical perfs. of the selvage which have been rejoined and to attempt to disguise this fact, the selvage portion (only) of the plate no. block has been regummed, still a presentable example of this rare plate no. block, stamps fine-very fine, Scott retail $4,000.00