Ah! I see now. Well, I don't know if there are any clear enough screen caps of that angle to say for sure if it's something that was there during production, but it certainly seems that it is not "incidental" damage.
I'll have to check my batch of pics, and if it's something that looks doable, it's a simple matter of scrubbing on some gray pigment powder.
You've got a good eye for detail!
NOTE: December 7th
My welding visors came in the other day, and I had gotten one of them trimmed to fit the helmet. I'm glad I ordered 2, cuz I messed up the first one a bit at the bottom!

But the second one fits like a champ.
However, the visor attachment method didn't work out like I'd hoped. :facepalm
I had gotten some aluminum screw posts, similar to Spideyfett's T-nut method, and JBWelded them onto the inside of the helmet.
I went to attach the visor a little while ago, and one of the screw posts popped right off!

I've used JBWeld on a lot of projects before, and would have thought this was practically impossible. ("That's not true! That's impossible!!"

)
So tomorrow, it's back to Ace Hardware to get some pre-formed picture hanging brackets and some plumbers' putty to go back to the installation method I used on my good ol' MS1 helmet. It'll be semi-permanently installed, but it will definitely be more secure.