5 złoty Polish stamp . 1957 . 75th anniversary of the founding ICAO

 This stamp is a 5 złoty Polish airmail stamp issued in 1957 to commemorate the 75th anniversary of the founding of the International Civil Aviation Organization (ICAO). The stamp depicts a stylized airplane flying over a globe. 

The International Civil Aviation Organization (ICAO) is a specialized agency of the United Nations that sets standards and procedures for international air navigation. ICAO was founded in 1944 and has 193 member states.

                                                               ID # 0029