Founded in 1919, as Polski Klub Sportowy Polonia, it was the strongest team of the Polish minority in Czechoslovakia.

PKS Polonia was initially one of the sections of Polish Gymnastic Society Sokół, eventually on 28 January 1931 it gained organizational independence.

It was a tournament for Polish ethnic sports organizations existing beyond borders of Poland, its official name was: "Games for Sportsmen from Abroad and The Independent City of Danzig".

This friendly match was connected with Polish takeover of Trans-Olza and the Warsaw crowd enthusiastically welcomed players from Karwina.

In March 1939 Polonia was added to the Silesian A-Class (see: Lower Level Football Leagues in Interwar Poland), however its results were not impressive.