A vibrant 1987 commemorative set from the République Populaire du Congo, issued for the Congrès des Hommes de Science d’Afrique (Congress of African Scientists). Each value highlights scientific collaboration, illustrated through interlinked gears featuring scenes of scientific research, technology, engineering, and innovation across Africa.
The design emphasizes unity and progress, using bold geometric motifs and bright contrasting backgrounds (pink, yellow-green, and brown). Printed by EDILA and designed by M.R. Olden, the set is popular with collectors of African thematic issues, science on stamps, and late-Cold-War-era African philately.
A clean and visually striking trio, ideal for exhibiting themes of science, development, and Pan-African cooperation.