Rare British MK IV 'Turtle' Combat Helmet 1945 - Nice Used Condition

Nice used example of a rare British MK IV 'Turtle' Combat Helmet. Fitted with orginal liner makers marked BMB (Briggs Motor Bodies) and 1945 dated. The size appears a size 6 3/4. The liner is attached with a 'Lift-the-Dot' press stud, textbook for the MK IV The chin strap is the one piece elastic late war pattern. A harder to find pattern 'Turtle' helmet with a great patina!