Issued by the Republic of Nicaragua in 1958, this striking airmail set commemorates the Exposición Mundial de Bruselas (World Exposition, Brussels). Designed and printed by Heraclio Fournier of Vitoria, the stamps feature the national emblem of Nicaragua alongside modernist depictions of the Atomium and Earth symbol, celebrating scientific progress and international unity. The vivid colors — red, blue, brown, and yellow — highlight Nicaragua’s pride in participating in this landmark world fair, reflecting both national identity and the era’s fascination with space and technology. A fine example of mid-20th-century thematic design and international exposition issues.