Australia - England Experimental Flight. 30.4.31 Rangoon - Athens stage by airplane "Southern Cross" piloted by Sir Charles Kingsford Smith to Akyab, then by Imperial Airways DH 66 City of Karachi to Calcutta & Delhi and thence by I.A. regular flight. Air cover with depart. canc. "RANGOON G.P.O. / SORTING / 28 APR.31", arr. "ΑΘΗΝΑΙ - ΑΦΙΞΙΣ ΑΕΡΟΠΟΡΙΚΩΣ / 10.V.31" & Air Arrival Greek cachet in red. 20 covers flown. (Hellas FF148G).