>> Freie Stadt Danzig Briefmarken Druckerei.
Two printing plants operated in the early Freie Stadt.
The New City-State Developts its own Air Mail Stamps.
The Kogge Series: Sauer involved in the first series, 31.1.1921.
Proclamation of thr Free City of Danzig; 15 November 1920.
Danzig Report, No. 138, Page 13.
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