Front cover mailed unpaid from "LONDON*19.SP.71" fr. on arrival with 5l. green+10l. red-orange, 20l. blue and 80l. carmine to pay 95l. from England to Greek borders + 20l. Greek postage and canc. "ΠΑΤΡΑΙ*15.ΣΕΠΤ.71". Stamp with heavy faults. (Hellas 17a+19b+26a+22b).