Danzig banknotes 20 Gulden banknote of 1937, Bank von Danzig.

Danzig banknotes 20 Gulden bank note Rare Paper Money
Danzig banknotes 20 Gulden banknote of 1937, Artushof - Artus courtyard. 
Danzig banknotes 20 Gulden banknote, Neptune Fountain Rare Paper Money
 Danzig banknotes 20 Gulden banknote of 1937, Neptune’s Fountain in Danzig
Currency of Free City of Danzig (German: Freie Stadt Danzig; Polish: Wolne Miasto Gdańsk)
World Paper Money - Bank von Danzig - 20 Gulden banknote of 1937

Obverse: Artushof in Danzig (Artus courtyard)at center.
Reverse: Neptune’s Fountain in Danzig (Gdansk), located in the center of Dlugi Targ, also known as The Long Market. Starting its living as a bronze statue in 1549; it was made into a fountain in 1633.

Following incorporation Danzig into Nazi Germany at the beginning of the World War II, the Reichsmark replaced the Gulden at a rate of 0.7 Reichsmark = 1 Gulden.