1.50 Mark Sparkasse

Insterburg — today Chernyakhovsk in Kaliningrad Oblast — was a prosperous East Prussian commercial town, and its Stadtsparkasse was among the many municipal savings institutions that issued Notgeld during the inflationary disruptions of the early 1920s. The 1.50 Mark denomination is slightly unusual; most Notgeld issuers gravitated toward round figures, and fractional marks at this level suggest the issuer was trying to address a very specific gap in local small change.

Carl Flemming & T. C. Wiskott in Glogau — Głogów in modern Poland — was a well-established Silesian printing house with a long record of producing municipal and commercial paper. Their work on Notgeld series from this period is generally consistent in registration and ink quality.