Air Mail cover 1937 (13 Feb.) buff envelope bearing K.G.V (2) cancelled Port Adelaide (13.2) and Adelaide (12.3) respectively and with typewritten "First regular Adelaide-Darwin and return flight by Guinea Airways Ltd via Lockheed Electra, 'C.J. Levien'" and signed by both pilots. This is the only cover carried. Eustis 704, Muller 144. Photo
Air Mail cover 1937 (13 Feb.) buff envelope bearing K.G.V (2) cancelled Port Adelaide (13.2) and Adelaide (12.3) respectively and with typewritten "First regular Adelaide-Darwin and return flight by Guinea Airways Ltd via Lockheed Electra, 'C.J. Levien'" and signed by both pilots. This is the only cover carried. Eustis 704, Muller 144. Photo

Details
Air Mail cover 1937 (13 Feb.) buff envelope bearing K.G.V (2) cancelled Port Adelaide (13.2) and Adelaide (12.3) respectively and with typewritten "First regular Adelaide-Darwin and return flight by Guinea Airways Ltd via Lockheed Electra, 'C.J. Levien'" and signed by both pilots. This is the only cover carried. Eustis 704, Muller 144. Photo