Fixed visor? I don't think I even need to see the inside of that thing to guess no.
You're probably correct.
I still have my first helmet. It's a McHal full face from '66. It's Snell approved, but there were no DOT ratings back then.
So how many people replace their helmets if they drop it or if it's over 5 years old? These are the new guideline recommendations by DOT and other safety organizations.
I have a Shoei flip up full face that I bought back in '95. I saw it in the movie True Lies. The young daughter's boy friend rides up on his crotch rocket and flips up his lower portion of the helmet; I was sold right then and there.
I paid over $500 for that helmet and still use it today. It's in excellent shape without any degrading of the foam or liner. I cannot see dumping a $500 helmet because it's over 5 years old.
Now my old McHal full face I bought in '66 has the liner crumbling and the foam is gooie. I keep it because it was my first helmet. I was 15 when I bought it and I actually slept in it the first night. What a nerd I was back then. Now I only take naps in my helmets...