75 Pfennig

Rheinsberg's 1921 Notgeld series was designed by Rob. Koch — almost certainly Robert Koch of Berlin, who contributed artwork to several Brandenburg municipal emergency currency issues of the period, though the name was common enough that attribution requires caution. The series reference DeNG 1/2#1120.1 places this squarely within the catalogued Kleingeldscheine issues, the small-denomination paper substitutes that flooded German commerce as metal coinage disappeared from circulation during the inflationary spiral following World War I.

Rheinsberg itself was a modest Brandenburg town, better known historically for the Schloss where Frederick the Great spent his formative years before ascending the Prussian throne — a connection local Notgeld issuers occasionally exploited for decorative prestige.