10l. orange (pos.141) "00" instead of "10" and double control numbers (0.5mm-1mm), (Kound. 62.3.1.l+62.7) canc. "ΚΑΛΑΜΑΙ". Very fine to superb margins but upper left corner slightly bent. Still fine for this very rare control number error combination. (Hellas 50bNeI+62.3.1.l).