1 Mark

Hallig Oland is one of the smallest permanently inhabited landmasses in the world — a low-lying grass tidal flat in the North Frisian Wadden Sea with a population that rarely exceeded a few dozen. That a municipality this size issued its own notgeld in 1921 says more about the chaotic fragmentation of German emergency money than about any local economic sophistication. By that point, thousands of German municipalities, cooperatives, and even private businesses were printing their own fractional currency to compensate for the chronic shortage of small-denomination Reichsbank coin.

The DeNG reference groups four variants under a single type, suggesting minor print or signature differences across issues — Eduard Panhen's signature appearing as the sole authorizing mark on a note from an administrative unit that was essentially a handful of farms on a flood-prone island.