The Australian Aircraft set of stamps was released on 19 NOV 1980 when I was 2 years old. I absolutely love this stamp design, but not super duper keen on the cover artwork for some reason. I would have preferred to see different images of the same planes on each cover, just my 2-bob’s worth.
Some more information about the artist Otto Borchert from the Unicover website:
Otto Borchert, Australian
Australian graphic designer Otto Borchert trained in Hanover, Germany, where he attended art school, sitting under the tutelage of many noted artists. He migrated to Sydney, Australia, in 1956 and in two years opened his own studio. Borchert created posters and other printed material for various worldwide distributors, including the travel industry and multi-national companies. His refined, detailed style of painting was well suited for cartography, and Borchert became known for his colorful, detailed maps and charts. His use of fine detail, brilliant color and realism works well in stamp design. Borchert has created a variety of stunning paintings for postage stamps, including his spectacular 1976 Australian Scenes Stamp Series. He has also produced a stamp series for the Australia Post, in April 1979, featuring ferries and Murray River steamers, a testament to his regard for accuracy and detail.