20l. blue in used marginal strip of 5 (pos.61-65) with plate flaws "wide narrow" and "broken left fame line" (type II, pos.62) and "narrow borders" (pos.63 and 64), vertical crease and light thin (pos.63) and narrow bottom margin (pos.63+64), otherwise Fine (3 large margins). Extremely Rare. (Hellas 35c - 1600++ euros).