Zeppelin Mail - Overseas: 1931, EGYPT to GERMANY RETURN FLIGHT, 50 M on 27 M red
Zeppelin Mail - Overseas
1931, EGYPT to GERMANY RETURN FLIGHT, 50 M on 27 M red brown surcharge with variety "1951" (Sc.#3a) together with 100 M on 27 M red brown surcharge with variety 'both numerals "1" in "1931" shortened' (Sc.#4 var), tied by cds CAIRE/GRAF ZEPPELIN, 11.AP.31, on cover to Geneva in...