Hello, is this a Pickelhaube from a pioneer officer just an "Eigentums-Helm" ?
Why is the chinscale in silver ? Are the applications in nickel-silver ?
What means the marking "Oepaheg Patent" ?
Welcome to the forum! That wouldn't be a Pioneer helmet with rounded chinscales, I'm sure somebody can ID it quicker than I. The Depaheg Patent is the manufacturer mark. It looks like this helmet has a vulcan fiber body, rather than leather, but I can't really make out trim colors from the photos. Maybe tell us the finish on the visor trim, scales (silver you said, correct?), spike, wappen (plate) and back spine. To me it all looks gold colored, but then that might be this computer too. I was thinking Train Battalion officer...
Welcome to the forum.
Further to what Ron mentioned, that maker (Depaheg Patent) only made FIBER spike helmets as I learned here sometime back.
The fiber was an early type of plastic made from natural fibers (celulose).
Prussian pioneer officer helmet. There is a slight curve to the first scale next to the chinscale boss but the boss itself is flat not curved as it would be on a true mounted officer.
If it's a Pioneer, I don't understand why it would have silver convex chin scales... however, I did some searching and in a book called "Helme u. Muetzen Der Armee, 1871-1945" by Gerd M. Schulz, it mentions a helmet called a Zahlmeisteraspirant or Unterzahlmeister. This has a rounded visor and all silver trim including silver chinscales. However, it specifies that the wappen is without the 'Vaterlandsbandeau'. :-k