10x20l blue, indigo blue, prussian blue and ultramarine, all with impressive control numbers displacements (Kound. 63.16). One stamp canc. "ΑΝΔΡΙΤΣΑΙΝΑ" while another copy "ΚΕΑ" (P.O.s not mentioned in Koundouros study). All stamps with faults. Very fine study lot. (Hellas 51b+51d+51e+51f).