20 Fillér Sokszorosító Ipar Rt., Budapest

Sokszorosító Ipar Részvénytársaság was a Budapest printing and reproduction firm, not a bank — and that distinction matters here. In the chaotic monetary conditions following Hungary's post-war dismemberment and the collapse of the Austro-Hungarian krone's purchasing power, private companies, municipalities, and cooperatives across Hungary issued their own emergency fractional notes throughout the early 1920s. These so-called "szükségpénz" filled the gap left by a chronic shortage of small-denomination state coinage.

The Adamo catalogue remains the primary reference for Hungarian necessity money of this period, though attribution and survival data for individual corporate issuers like this one are often incomplete.