Watch List notes:

DANZIG: Free City, AV 25 gulden, 1930, KM-150, Neptunbrunnen by Abraham van den Blocke, 1617, NGC graded MS66. The Free State of Danzig (Freie Stadt Danzig) survived from 1920-1939, created through the Treaty of Versailles and under the authority of the League of Nations, thus nominally separated from both Germany and Poland.

Estimate: 2,200-2,600 USD