This 15 Heller brown stamp from the Republic of Austria, issued in 1919, features the intricate double-headed eagle emblem—symbolizing Austria’s imperial heritage and national sovereignty. Designed by Josef Renner, it forms part of the first definitive series after the fall of the Austro-Hungarian Empire. The ornate Art Nouveau–inspired detailing reflects the transitional artistry of postwar Austrian design, combining regal symbolism with modern typographic style. A must-have for collectors interested in early Austrian republic issues.