ΚΕΡΚΥΡΑ*25.ΜΑΙ.31 first flight registered cover to LONDON(trace of arr. cachet) by IA, arr. "ST. JOHNS, N.F.*8.JUN.31", air-cachet type 16a in red, with commemorative canc. "IMPERIAL AIRWAYS ENGLAND-INDIA LINE*FIRST AIRMAIL CORFU-LONDON". Returned to sender. (Hellas FF161E).