20 Heller Gumpoldskirchen

Gumpoldskirchen is a small wine-producing town south of Vienna, and like hundreds of Austrian municipalities it resorted to issuing its own emergency paper currency — Notgeld — during the severe coin shortages that followed the First World War. The Austrian state was effectively unable to supply small change to its own population in 1919–1920, leaving local authorities to fill the gap with locally printed scrip, redeemable only within the issuing community.

F. Seiteneberg was a Vienna commercial printer, not a security printing house, which is exactly the point — these were stopgap instruments, not formal banknotes. The JPR reference places this firmly within the Jaksch catalog of Lower Austrian municipal issues.