Indian ocean survey flight. Catalina flying boat GUBA 2. One of very few genuinely commercial covers flown. It left Victoria on 17-6-1939, arriving Kisumu, there it attracted a K.U.T. 20 cents adhesive (cancelled on 23-6) to prepay the Empire Air Mail "All-Up" rate to India, it arrived in Karachi on 27-6, to finally arrive in Ahmedabad on 28-6-1939.