1855 DIE 2 PL.19 L.C.14 (C6) MINT BLOCK OF FOUR DOUBLE STRIKE OF PERFORATION COMB. A good mint block 1855 die 2 pl.19 L.C.14 (spec C6) with good large part original gum lettered AI AJ BI BJ showing DOUBLE STRIKE OF PERFORATION COMB AFFECTING AI AJ. Some perf reinforcement on reverse and spot on AI but a VERY RARE PIECE WITH DOUBLE PERFORATION. Letterings AI and AJ MISSING IMPRIMATUR LETTERING. (Ref 112868).