Danzig Airmails On 18 October 1923, Danzig issued these airmail issues with increasing face values to accommodate hyperinflation. Set Date(s) 18 October 1923 Watermark(s) Album Page(s) Airmails On 18 October 1923, Danzig issued these airmail issues with increasing face values to accommodate hyperinflation. Set Date(s) 18 October 1923 Watermark(s) Album Page(s)