This striking WWI-era Bulgarian issue (1915–1916) features Tsar Ferdinand I framed against a symbolic map showing Macedonia and Southern Dobrudja, regions Bulgaria sought to reclaim during the war. Printed in deep carmine, the design reflects the intense national aspirations of the period and forms part of a politically charged propaganda series. Collectors value this stamp for its bold typography, strong engraver’s lines, and its unmistakable historical context tied to Bulgaria’s territorial ambitions in the Balkans. A notable example of wartime philatelic nationalism.