The gutter is about the right length for a Ka-Bar.  The handle is also about the right length, but curved down some.  

If you look at photos of the KW rear seam post you will notice the first group of guys out of Japan in the 187th going to Korea did not have jump liners. They used cloth to secure their helmets. They also had painted helmets. That ended real quick because those were targets. The 187th was the only group to drop in. They also dropped their howitzers.

I have an example of one of those, a late summer early fall manganese back seam, there interesting… so if you ever need a pic of mint one hit me up!

You got that right!

https://www.warrelics.eu/forum/us-m1-steel-helmet-forum/mccord-manufacture-lot-transition-range-779223/   Another link to rough estimates on lot numbers. I noticed a bleed over on front and rear seam manganese helmets. This would help if you find a rear seam with a lot number that falls in the 1944 range.

I forgot this photo of the attachment base .

Also, to add to that, D-day is obviously the most popular jump with people wanting That configuration of helmet. There were other jumps like varsity so if you want a para helmet like P-59 said, get an M1C it’s still technically a ww2 era Jump helmet.

Has anyone seen these Penguin Hand Held Smoke Cartridges? I found these in a late 1960s SV-2 survival vest. They apparently attach to the pen flare launcher. Did the military ever adopt them?  Interesting.  Cheers

No mixing and matching the OG107 and OG507.  They were very different material.  You had to make at least a token effort to make your shirt and pants patch in terms of fading, wear, etc.     I actually numbered my shirts and trousers once I had figured out which ones matched best.   There were some permanent press fatigues that were available at the PX once the Army okayed them, but they were slightly different from the issue ones that came out a year or so later.  I got a set of each, and wore them almost exclusively saving me the hassle of getting the OG-107s starched and pressed.

Wow, AxolotlHelmet, that is fantastic work! I can't thank you enough.  Wonderful to get know these soldiers more and even see faces!   As for the last name, that is a tough one, but my best guess is the last name is RENNELLA  or RENNELLO  or possible starting with a P.  Here's the best images I could get. Thanks again!