WW2 Civil Defence MKII Helmet (1939)

An untouched, fresh to the market early WW2 Civil Defence / ARP MkII steel helmet, this un-cleaned example bears a D26 manufacturers stamping to the shell which as yet I have not been able to identify.
The external black paint finish has service and age related wear and plenty of character, original undisturbed large size liner screw bolt.
The liner cradle bears the makers name TTC along with a size and date stamp, 6 3/4 & 1939, the Rexene coating is dry with some flaking present, original side sprung webbing chinstrap.
please study images in regards to condition + additional photo's.

Code: 50903