Soviet helmets. Difference between SSch 39 and 40 helmets

[Dimas]

Here I will try to make a comparision between the helmets. So, if you have some of them, you can easily understand what I'am about.
So, the first picture is comparition of very early LMZ made SSch 39 with early type liner and a early LMZ tag on it. The right one is a LMZ transititional 39/40 helmet. They have some minor differences. The 39 helmet's visor is a bit higher ( that is not a size difference, both are 2 POCT), also the 39 helmet has a more egg shape than a 39/40

[Dimas]

Here is the comparition between transitiotional 39/40, to be right, transititional 39 with, 3 pad type liner SSch-40. Both the same shape, LMZ factory, size 2 and even the paint
The difference only in the liner system

[Pierre N]

very interesting information Dimas ! thank for posting