I’ve looked at these very closely and frankly they tell me nothing. You can see the “diamond” shape but without knowing what’s inside I don’t believe you can identify them at all. Of course, some kind of forensic or x-ray analysis may be able to give more detail, but I doubt it.
My only question, was their anything INSIDE the helmet, name or makers information or dates etc.
For now, I can’t see how anyone can claim this were “Canadian” unless it was linked to other information, such as the helmet was found with other equipment, or uniforms that are “Canadian”......but even then it would be a guess.
I’m not sure if any other members have idea’s or clues.