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1976 marked the 30th anniversary of continuous operations by Philippine Airlines. PAL services had been interrupted during World War II. ( In 1935 the Philippine Congress had approved the franchise of " Philippine Aerial Taxi Company ", and the first flight had taken place by " Philippine Air Lines " between Manila and Baguio in 1941 ). By 1972 President Marcos had implemented a " one airline policy " ( PAL ) as part of his declaration of Martial Law.


These stamps show Douglas DC-3 and DC-10 :-






While on the theme of airmail, this block of stamps featuring the " Baguio Zigzag road " - one of the first pictorial stamps in the country ( 1932 ) - was overprinted the following year by the Philippine Bureau of Printing, as dedicated airmail stamps were not issued until 1947.