Bank von Danzig, a group of watermarked papers as used on the issues of 1924-37, comprising 10, 20, 25, 50 and 100 (2) Gulden, all glued into individual blue card frames, ink annotations on paper, as produced, rare, this is the only 50 Gulden paper in the Portals archive (6 papers)
BNB B401-B408, Pick 53-64 for types £300-£400

These items are directly from the Portals Paper archive