Issued by Correos de México in the mid-1950s, this 80 centavos Correo Aéreo stamp celebrates the rise of modernist architecture in Mexico City. The design, printed in deep maroon, depicts the iconic buildings of Ciudad Universitaria (CU) — the National Autonomous University of Mexico’s modern campus — symbolizing national progress and innovation. The inscription “ARQ. MODERNA MEX. D.F.” (Modern Architecture, Mexico City) reinforces the theme. Produced by the Talleres de Impresión de Estampillas y Valores, it exemplifies Mexico’s postwar pride in urban modernization and cultural identity.