These are getting increasingly harder to find, and were the main combat helmet of Poland from 1967 to 1993. In 1975, the Polish military designed a more replaceable and comfortable liner than the Wz.67 liner, while still using the same shell. This example has the Green Eagle Stencil on the front, albeit surrounded by rust spots from storage. Larger shell with a medium/large liner.
Actual helmet is pictured.