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A German ostmark banknote issued by the German Empire towards the end of World War I, for circulation in the "Upper East" region of occupied territories. Issued by the State Loan Bank in Kowno, Lithuania, this currency was equivalent to the German Papiermark and denominated from ½ Mark through 1000 Marks. It remained in use in Lithuania until 1922, when it was replaced by the litas.Banknote: State Loan Bank (image courtesy of the National Numismatic Collection, National Museum of American History)