Help dating my Mk4

[WizKid]

Hello, I picked up this unmarked British Mk4 yesterday. I know they produced these from 1944-1946 and then again in the 1950s. I was wondering if you could help determine if this is from 44-46 or the 50s.

Thanks,
Ethan

[BrodieBartfast]

Are there any markings visible around the inner rim of the shell? They would be the easiest method for dating one of these exactly.

B.B.

[WizKid]

No, I couldn't find any

[BrodieBartfast]

May be rather difficult to date it, then. The only other date marking would have been in the liner, which is obviously not present.
I'm unsure if there's a specific manufacturing method that would identify this one as being of a certain time frame, but even if there is, there will be no way to guess at an exact year.

B.B.

[tinlid]

Without a date, no chance, both BMB and RO&Co made these Mk4's from early 1945-January46.
At least it looks like the paint inside is textured dark brown, which the 1945 ones were, got a picture of the rim join?

[Composite]

Tinlid's right (as usual!).

have a second look for a date......usually at the back (the slopey end), mid-point between the strap retainers....about 2-3 inches up the inside...you should be able to find something

[WizKid]

Composite, I still couldn't find a date, but here are some up close pictures.

[tinlid]

Looks to be an BMB made helmet, date will be vertical to the rim at the rear inside. Look on the outside also and you should see a raised bit where it was stamped from the inside.

[WizKid]

We're all of these helmets dated, because I still cannot find a date. Also to touch on the topic of the paint, to me it looks oxidized not textured and black not brown, but that's just my opinion.
Thanks,
Ethan

[tinlid]

Sometimes date/maker names are not visible, and if black, then it's either been refurbished or is a later date Mk4, early 50's.