80l carmine in mint block of 70 (pos.81-150), thick or broken circle in pos.86, 107, 114, 118, 143 and 143. Inverted "8" on control number in pos.91. Oval cachet "ΕΛΕΓΧΟΣ". Pos.110+120 hinged, the rest u/m. Certificate Holcombe (1988). Pos.85+150 stamps with minor faults, totally insignificant for such a large block. Very fine and very rare. (Hellas 22b+22bNa).