Issued by Mexico in 1978, this airmail commemorative honors the 50th anniversary of the historic 1928 goodwill flight from Mexico City to Washington led by pioneering aviator Emilio Carranza, often called the “Lindbergh of Mexico.” The design reproduces an early Mexican airmail stamp alongside Carranza’s portrait and aviation imagery, symbolizing early international air cooperation. The surrounding monuments represent friendship between Mexico and the United States. A highly thematic issue appealing to aviation, pioneer flight, and airmail collectors.