Thank you for all the comments. My SS headgear collection is now evenly split in numbers between cloth and helmets. The helmets, needless to say, dominate the value category.
Darryl, you are correct. It's almost like invisible ink but I was able to see traces of a dome stamp in both helmets by shining a flashlight at an angle. Amazing!
I was not able to capture the subtle color difference between the two but the 4367 ET is more an apple-green and the Pocher ET is more a pea-green as shown on page 102 of "SS-Steel."
Cheers,
Erich
