50 Pfennig

Bad Nauheim's 1917 Notgeld issue belongs to the earliest wave of municipal emergency currency, predating the chaotic mass production of 1921–22 by several years. The city — a prosperous spa town in Hesse — had the means and the local connections to commission Carl Naumann's Druckerei in Frankfurt rather than rely on whatever printer the wartime authorities might have assigned.

The reference suffix structure (1a-1/4) indicates this is one of four known variants within the same base type, distinguished typically by minor typographic or serial differences rather than design changes. Collectors frequently undercount these distinctions.