25 Pfennigs

Thesdorf was a small village in Schleswig-Holstein, and like hundreds of German municipalities during the Kleingeldnot — the small-change shortage that gripped Germany between 1916 and the early 1920s — it issued its own Notgeld to fill the vacuum left by hoarded metal coinage. The Konrad Hanf firm in Hamburg was a workhorse printer for this trade, producing emergency notes for dozens of northern German communities, which means Hanf-printed Thesdorf pieces are competently made but not particularly rare in terms of production quality.

The issuer's extreme obscurity is the practical challenge here. Thesdorf generated little documentation, and redemption records are essentially nonexistent.