https://www.warrelics.eu/forum/attachments/polish-armed-forces-west-polskie-si-y-zbrojne-na-zachodzie-1939-1947/1365763d1577218066t-please-help-identify-polish-british-m1917-bmb-1942-helmet-img_4617.jpg?s=fecb3ad0a20ce1a135f1c1f14ee6d635