Small copper coin - scherf (pfennig) - is a casual, copper coin associated with the coinage of the Upper Saxony District of the Reich, which also included the Duchy of Pomerania.
Variety with stars between the letters in the obverse legend. The lower line of the legend is invisible, so it cannot be matched to a specific variety of the Gibczyński-Witkiewicz IF.91.1 (R) type.