Is this wwii german m1940 helmet authentic?

[helmet2id]

Better luck next time..

Hi Jim, Welcome back, I was just wondering where you have been. Hopefully, not working ALL of the time. Anyway, good to hear from you. Cheers, Jim G.

[battle gear]

looks like yours has a rivet type air vent? I thought those were M35 helmets? the pressed air vents are the M40

do you know if the air vents are the riveted seperate pieces or the pressed type?

[militarymania]

both helmets exhibit the pressed in/out air vents...

[ObKrieger]

Quist M40's have notably larger air vents, which may have led to your confusion.