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Issued during the German occupation of a small section of Iran during the Persian Campaign of World War I, this 1904 five Mark German Imperial Treasury note has been overstamped in Farsi with the denomination of 12 qiran 10 shahi for local circulation. This note is the smallest denomination in a five-note issue which included 25 qiran (overprinted on a 10 Mark note), 5 tomans (20 Mark), 25 tomans (100 Mark), and 250 tomans (1,000 Mark).Banknote: Germany (image courtesy of the National Numismatic Collection, National Museum of American History)