10 Fillér Sopron

Sopron issued its own small-denomination emergency currency in 1918–1919 as the Austro-Hungarian monetary system collapsed and coin shortages became acute across the former empire. These municipal fillér notes — szükségpénz, or necessity money — were a local solution to a hyperlocal problem, authorized by the city government rather than any central banking authority.

Röttig-Romwalter was a well-established Sopron printing house, not a security printer, which shows in the relatively modest production values of the series. The Ambrus catalogue remains the principal reference for Hungarian municipal emergency issues of this period.