This meaningful 1968 Luxembourg Caritas charity issue was released to raise funds for the welfare of disabled children, with each stamp carrying an additional surtax contribution. The set features expressive artistic portraits of children rendered in soft pastel tones, emphasizing compassion, dignity, and social awareness. Designed by Ger Maas and printed by Courvoisier S.A., the series reflects the strong European tradition of charity semi-postals supporting humanitarian causes. Complete sets are appreciated by collectors specializing in social welfare themes, Red Cross/Caritas issues, and European semi-postal philately, especially when preserved in fresh mint condition.