20 Heller Oberösterreich

Austrian Länder notgeld from this period fills enormous volumes of specialist catalogs, but the Upper Austria provincial issues of 1921 occupy a specific administrative niche — these were issued by the provincial government itself rather than by a municipality or cooperative, making them a direct instrument of regional fiscal authority during the hyperinflationary spiral that followed Austria's post-war truncation. By 1921, the Vienna government had effectively lost control of the money supply, and provincial authorities across rump Austria were printing their own small-denomination emergency notes to cover gaps left by the collapse of small coinage.

The 20 Heller denomination was among the lowest-value issues still worth printing — a measure of how badly fractional currency had evaporated from daily commerce.