Colombia Airmail, Avianca 25th Anniversary, Complete Set

Colombia · 1945 · 5c, 10c, 20c, 30c

This complete set of four airmail stamps commemorates the 25th anniversary of Avianca, the national airline of Colombia. The designs feature various aircraft significant to the airline's history, including a Sikorsky S-38 flying boat, a Ford Trimotor, a Boeing 247, and a Douglas DC-3, symbolizing the evolution of air travel in the country.

Issued in 1945, these stamps celebrate Avianca, which was founded in 1919 as SCADTA, making it the world's second-oldest airline. The set highlights the rapid technological advancements in aviation during the first half of the 20th century.