Eek! I'd say that you are right. Someone tried to re-convert a Norwegian helmet back into what they hoped would pass for an original German issue. Unfortunately, such was, apparently, not possible...
"Much that once was, is lost. For none now live who remember it."
Hi Al, I agree with you that this is a messed with Norwegian re-issue helmet. Personally I would leave it well alone. Leon.
"Always do sober what you said you'd do drunk. That will teach you to keep your mouth shut." Ernest Hemingway
Brass liner rivets = Norwegian
Aluminum = German
An easy identifier. ......
" When you're chewing on life's gristle, don't grumble, give a whistle "
Thanks guys; and thank you Danmark for the education - I learn new things every day on this Forum.