Issued in 1985, this vibrant $15 stamp from Colombia celebrates the Año Nacional de la Educación (National Year of Education). Designed by Marta Granados, it features a symbolic “tree of knowledge” formed by colorful alphabet letters, representing learning and growth. The bright background and human figures at the base emphasize unity, diversity, and the importance of education in building the nation’s future. Printed by De La Rue de Colombia, this modernist design remains one of Colombia’s most striking educational-themed issues.