50 Pfennig Thüringer Landwirtschaft-, Industrie- und Gewerbe-Ausstellung

Friedrichroda was a small Thuringian spa town, and this note was issued specifically to facilitate commerce at the Thuringian Agricultural, Industrial, and Trade Exhibition of 1921 — not as general emergency currency. Notgeld tied to a specific exhibition event occupies a narrower category than municipal Notgeld proper; it was conceived partly as a collectible from the outset, which is why the watermarked paper stock was worth the expense for what was, in practical terms, a short-run scrip.

The reference clustering under DeNG 1/2#GrM:393.2 indicates this belongs to a documented Friedrichroda series, with at least four variants in the group.