The chin strap is fully functional.
British Army MK 7 Helmet Size Medium
British Army Mk 4 Turtle Helmet Genuine Replacement Inner
RARE 1917 British Artillery Handbook for B.L 8-INCH HOW MK VI
Indiana Jones Vintage vtg British Canadean MKVI Gas Mask Bag MK VI Original
British Army NBC 3 Colour Detector Paper Chemical Agent NO1 MK 2 Liquid CBRN ABC
1981 dates British Army Issue Overboots No.1 Mk.3 Fishtail Falklands Era August
