WW1 or 1920's Polish Legion Army NCO's Cap

A very interesting and unsual Polish WW1 or 1920’s Army Polish Legion NCO’s Cap

Have not seen one like it before and and from the style of the cap would say that it is quite early. Made from quality materials and quite “heavy”. Includes a white metal Polish state eagle – is without the royal crown but I believe that pre-WWw variants were produced without them, particularly for the Polish Legion. I would guess that the cap was worn by an NCO. There is a maker’s/retailer’s label inside the cap.