Help! Need indentification

[rottenfuhrer-nl]

Can anyone tell me what maker is this? There are almost no stamps left .It should be possible by airvent location?
Can post better pics tomorrow but the problem is that there nothing more is to see

[HARRY THE MOLE]

You will need to supply a bit more than a single picture if you expect someone to tell you who the manufacturer of this helmet was.

[PotatoDigger]

Well if it were an M40/M42 it'd be easier but I don't know what shapes to look for on M35 air vents.