20l blue (pos.5), printing of the edge of the spacer at top (similar to Kound. 62.18 case for pos.5 10 lepta announced by M. Kaitatzidis), canc. "ΛΙΞΟΥΡΙΟΝ" while the 10 lepta similar stamp was canc. "ΠΕΙΡΑΙΕΥΣ". Very fine, impressive, never announced before for the 20 lepta value of this issue. Rare. (Hellas 51b).