Issued in 1962, this 40 centavos commemorative stamp from Mexico celebrates the Feria Mundial de Seattle — the Seattle World’s Fair, also known as the Century 21 Exposition. The stamp features a striking monochrome depiction of the Space Needle, symbolizing human progress and the age of technology. The mechanical gear motif behind it evokes industrial innovation and global cooperation. Printed by Talleres de Impresión de Estampillas y Valores de México, it reflects Mexico’s participation in an event showcasing scientific and cultural advancement.