German Democratic Republic. German Note-Issuing Bank. 1948 Issues. Date: 25-07-1948. Dimensions: 162 x 82 mm. Watermark: Arrows pattern. Material: Paper. No security thread. Printers: Gosnak or East Germany. Multicolored front and back printing, predominantly brown and yellow. Description of the front: Frame and background composed of guilloche patterns. Texts in German. Letter and numbering with six or 7 digits in red. Value "20 mark" in a decorated rosette on the right. No signature. Description of the back: Texts in German. Frame and background composed of guilloche patterns. Value "20" in a decorated rosette in the center. Replacement note with prefix X.