This Austrian Militärpost postage due stamp features the bold red numeral “2” at center, framed within an ornate black circular border printed on a finely patterned cream background. Issued for use in Austro-Hungarian military postal zones during World War I, this 2-Heller value belongs to the well-known Portomarke series designed to indicate unpaid fees on soldiers’ mail. The intricate ornaments, oak-leaf corner motifs, and crisp typography exemplify the precise engraving style typical of wartime Austrian fiscal and military issues. Postmarked examples such as this one are especially desirable, as they reflect genuine field usage in military mail operations.