This 1942 semi-postal issue from Germany was released for the Europäischer Postkongress (European Postal Congress) held in Vienna. The deep blue design features a historic postal courier blowing a post horn before a map of Europe—symbolizing cross-continental communication networks. Issued during WWII, the stamp has a 3 Pfennig face value plus a 7 Pfennig surtax, the latter used to support postal or state-assigned wartime funds. Its strong graphic style and geopolitical map make it a notable example of wartime postal propaganda accessible to collectors of postal history, WWII-era issues, and congress commemoratives.