Here is focused on so-called Danzig model.

Before WWII, Günter Wagner had many foreign factories (e.g. Danzig, Bucharest, Barcelona, Milan, Sofia, Vienna, Warsaw, Zagreb, Zürich, and throughout South America). In some factories, complete pens may have been assembled out of parts (Pelikan Schreibgeräte, Pelikan Pens: History).

According to Pelikan’s Perch, the Danzig factory was established in 1922, and primarily produced office supplies including inks. It seems that the factory began to produce pens in the late 1930s at earliest. Basically, pens were assembled from parts imported from the Hanover factory⁽¹⁾.

More than any other foreign factories, the products of the Danzig factory differed from the Hannover products most notably in the distinctive diamond shaped clip and the single cap ring. Pens with those clips and cap rings are sometimes called "Danzig model"⁽²⁾. Nibs may have been made there, some of them bearing a distinctive round “P” logo (Pelikan Pens: History).
 
After WWII, the factory resumed operations under the Polish management until it was seized by the state in October 1946 (Pelikan’s Perch).

Note;⁽¹⁾According to Pelikan’s Perch, there is no evidence that any pen production occurred on site.
⁽²⁾Interstingly, Pelikan’s Perch raised the possibility that "Danzig model" actually had nothing to do with that factory but was instead a wartime product designed for export, as there are no known price list or ads surviving from that period or region which indicates a pen with a diamond clip and/or a single cap band, and as the ads for the Polish market appear to be translated and reproduced from Germany ads rather than produced locally or unique to the region.