unused Block Larger Than four 1c Green, A.E.F. booklet pane of thirty (498f), pos. W11 showing plate finishers initials at B.L. and full guide line at R., light perf. strengthening along one vertical row of perfs. (a precautionary messure to preserve the booklet pane - as it was lightly folded along those perfs.), otherwise fine-very fine, scarce, Scott retail $1,000.00