The best Polish helmet from Communist period was helmet Wz.67/75. It differ from Wz.67 by improved hardness of the shell (steel alloy) and totally redesigned liner. The new liner provides better ventilation while the "hammock" design on the back of the liner makes the helmet seat on the head in any body position. Offered example is an Army model, painted khaki with white-green Polish Eagle painted on the front. Standard issue with camo net. Condition: Like new. No dents or scratches, perfect liner and chinstrap. Impossible to upgrade.
(This model was offered for sale to Third World countries and many of them ended in Asia and Africa - see photo from Afganistan)