French M15 "Armored" or "Special Artillery" Adrian Helmet

French M15, affixed with a seldom seen "Armored Corps" or "Special Artillery" insignia, as installed. This emblem is typically only seen on French modèle tanker helmets, but has been described as being rarely affixed to Adrian helmets as well. 

1919 2nd Variety (longneck) emblem.

Huge thanks to World-War-Helmets & Combat Helmets of the World for extra information. If anyone has an example of this emblem on an Adrian, it would be greatly appreciated.

Blog written by: Jack Wade