Issued in 1991, this 40-cent commemorative stamp celebrates the 40th Anniversary of the United Nations Postal Administration (UNPA), established in 1951. The design pays tribute to the UN’s first stamp — the 1951 1-cent issue — by featuring a stylized reproduction of it within the frame. Inscribed with “Peace, Justice, Security” in multiple languages, the emblem highlights the organization's universal mission. Printed in rich violet tones, the layout reflects both modernity and nostalgia, marking four decades of postal diplomacy under the UN banner.