Germany Danzig 500 000 000 Mark 1923 Banknote. Obverse: Portrait of Arthur Schopenhauer (1788-1860) in a round medallion; surrounded by vegetal motifs. 1923-Sep-26. Reverse: Coat of arms of the City of Danzig in round medallion with ornamental frame; above panoramic city view.S/N 172438. P# 28