This is in fact a regular tin ersatz Tschapka, not a test helmet. These came painted black or olive green. Inside was a thin leather liner, and another liner made of felt or leather, between the shell and main liner.The quality looks good, I think it could be a test helmet. But it is hard to proof without documentation.
Not sure what that means. Any chance you could post the photo so we can see? I for one, won’t create an account just to see a photo.PS - the eagle is very specific in the feather orientation and is difficult to find...
Adam