1 Pfennig Pale Green paper; Brown ink

Passau's wartime Kleingeldersatz notes — emergency small-change substitutes issued by the municipality when metal coinage all but vanished from circulation during World War I — were produced on perforated paper strips, with individual notes separated by tearing along the perforation line. The perforation itself doubled as the sole security feature, a practical solution for a denomination so low that sophisticated printing was economically absurd.

The pale green paper stock was likely chosen for denomination differentiation within the series rather than for any anti-counterfeiting purpose.