This Belgian semi-postal stamp series features a dramatic aviation scene with a pilot seated in an aircraft cockpit against a stylized globe and sky background. Issued in 1936, the stamps promoted support for aeronautical and aviation development funds, with a small surtax added to the postal value. The design reflects the growing fascination with aviation during the interwar period and highlights Belgium’s engagement with early aviation progress. Printed in different color tones and denominations, the set is popular among collectors of aviation, airmail, and semi-postal charity stamps.