STF_PRÆSENS - A geometric retro display sans
The source for this font was the lettering seen on the cover of 1930's second issue of "Præsens". A Polish avant-garde artistic magazine from the interwar period that was designed by the architect Szymon Syrkus. The letters on the magazine's title formed the baseline to extrapolate the complete font.
The magazine got published throughout the first part of the previous century and was similar to other magazines from that same era such as:
DeStijl, Wendingen & Het Overzicht.