Issued by Belgium in 1974, this commemorative stamp marks the 10th anniversary (1964–1974) of the Secular Youth Festival, celebrating youth development, education, and humanist values within Belgian society. The design features stylized portraits of two children symbolizing unity, progress, and the future generation. Printed with bilingual inscriptions in French and Dutch, the issue reflects Belgium’s cultural duality. Its clean modern graphic style makes it a notable thematic collectible for youth, education, and social movement philately collections.