ΑΘΗΝΑΙ*4.III.31 first leg of the first flight from the opening of the itinerary "England - East Africa Service" to "ALEXANDRIE*5.MR.31". Commemorative canc. "1931 ΕΝΑΡΞΙΣ ΑΕΡΟΠ. ΣΥΓΚΟΙΝΩΝΙΑΣ ΕΛΛΑΔΟΣ - ΣΟΥΔΑΝ ΚΕΝΤΡ. ΑΦΡΙΚΗΣ" on official IAcover. (Hellas FF139).