Thank you for your reply,
Though i am indeed the fortunate owner of the helmet ( or unfortunate as the case may be) the helmet is not in my possession yet. It's being shipped from Germany as we speak, so i can't provide additional photos of it until it arrives. The only other info i can provide is that it was ( erroneously) described as a gebirgs maschinen gewehr helmet and that there is a stamp on the underside ( VI 1918).
I appreciate the warm welcome and must confess I know very little of Pioneer units ( if thats what it turns out to be) let alne pickelhaubes, My interest is primarily in colonial headgear, as well as headgear of units stationed in the Mediterranean, Adriatic ( ie Balkans), and the Orient. This helmet captured my interest given the possibility that it resembled a scroll helmet and so may have traveled to one or more of the aforementioned. So any info on it, should it prove to be authentic, would be greatly appreciated. I particularly like that it is understated, but have no idea of its value or if such otherwise obscure helmets are of any interest to collectors.