Registered airmail cover fr. with 1dr+7dr+3x10dr+2x25dr 1937/39 Mythological airmails, 2dr 1937 Historical, 2x3dr+8dr 1939 Balkan Games regulars and 2x50l. Charity stamps canc. "ΑΘΗΝΑΙ*5.Χ.38" to Australia. On reverse circular exchange control cachet "ΥΕΣ".