3 Mark Exin

Exin — known today as Kcynia, in what is now north-central Poland — was a small Prussian town in the Netze District whose municipal treasury issued emergency paper money in 1914 as the outbreak of war triggered an immediate hoarding crisis across Germany. Metal coinage vanished from circulation within weeks of mobilization, forcing thousands of local authorities to print their own stopgap Notgeld. The Stadtkasse issues from towns of Exin's size were typically produced in very small runs, often on whatever paper stock the municipal office had to hand, and were redeemed — or not — depending entirely on local administrative follow-through.

The DeNG 11 reference situates this within the first wave of German wartime emergency issues, before the better-documented 1918–1923 Notgeld flood that collectors more commonly encounter.