1 Pfennig

Lüben's 1 Pfennig notgeld belongs to the smallest denomination class of the German emergency money wave that peaked between 1919 and 1921, when chronic coin shortages — driven by wartime metal requisitions and postwar hoarding — forced hundreds of municipalities to print their own fractional currency. A 20×20mm paper square was about as small as a circulating note ever got, and handling losses were significant; many examples were simply lost or destroyed in pockets and purses rather than formally withdrawn.

The DeNG reference places this within the documented Lüben municipal series, a Silesian town that would later pass to Poland as Lubin following World War II.