This 20 centimes stamp from Rwanda, issued in 1983, features striking illustrations of mountain gorillas (Gorilla beringei beringei), an endangered species native to the Virunga Mountains. The design by T. Martin shows both an adult and a young gorilla against a patterned ochre background, emphasizing the species’ importance in Rwanda’s biodiversity. Printed by Questa, the issue highlights Rwanda’s role in conservation efforts during the late 20th century. Collectors value this stamp for its natural history theme and its role in promoting awareness of endangered wildlife.