Issued in 1940 by the Republic of Paraguay, this striking 50 centavos commemorative stamp celebrates the 50th Anniversary of the Pan-American Union (1890–1940), the precursor to today’s Organization of American States (OAS). Printed by the American Bank Note Company in vivid carmine-red, it features a finely engraved map of the Americas—symbolizing unity across the Western Hemisphere. The inscription “Tierra de Hombres Libres” (“Land of Free Men”) proudly reflects Paraguay’s national motto. This issue is prized for its classic ABNCo craftsmanship and its representation of inter-American solidarity during a pivotal era in hemispheric diplomacy.