Hi Mixer ,
Ok I understand better now, probably a lighter stamping (visible also on the first 2 and 4 and 8) .
This thread is getting interesting I hope to learn something from it. Datrus should have some of these lying around somewhere (I love the one with shrapnel stuck in it)
This exact helmet just got listed again on ebay, item #321442349506. Up to $154 with a little less than 3 days left.
I can do that but all i have here is ground dug ones I also dug another SN-42 but we go off topic here Will do a post later in "USSR".
Cheers my friend