This classic 10 heller stamp from Austria belongs to the iconic 1916–1918 “Imperial Crown” definitive series, issued during the final years of the Austro-Hungarian Empire. Designed by Rudolf Junk, it features the elaborately engraved Austrian Imperial Crown (Crown of Rudolf II), symbolizing Habsburg authority at the height of World War I. The deep carmine-red frame showcases intricate ornamental patterns characteristic of Austrian definitives of the era. Your example bears a bold circular postmark, adding strong postal-history appeal. A desirable addition for collectors of Austro-Hungarian monarchy, WWI-era issues, and classic definitive designs.