Vietnam Era Helmet and Liner

[fjruple]

Picked up a very nice Vietnam era helmet from the vet that owned it today. He was in the Air Force so it's like new with the exceptions of some paint scuffs on the helmet itself. What I'm curious about is if they can be identified by manufacturer and possibly a date.

Helmet is marked I-4461
Liner is marked US 19

I did some extensive searching but it seems no one cares unless it was made prior to 1946.

Thganks for the information just to let you know the helmet marking I-4461 is the first initial of the last name and last four numbers of the service number which is the Social Security Number of the owner. While the helmet liner could be of an earlier manufacturer with many user in between. The SSN number was establish as the service number as follows:
Army and Air Force July 1, 1969
Navy and Marine Corps January 1, 1972
Coast Guard October 1, 1974

Cheers

--fjruple

---------- Post added at 11:01 AM ---------- Previous post was at 10:54 AM ----------

I found this one back in the woods this year deer hunting. Surprised it could last so long because the tide gets back in there.
Attachment 93221

If your helmet came from the Delaware beach area i more than likely was used by any one of the military installations that existed along the shore. The beaches in Southern Delaware was used in the 1950 and 60's to train twin 40 gunners until the 60's there was only one left in the back bay area of Bethany Beach when I left the DEARNG in 1996. The land devlopers and politican got most of the beach front properties.

Information

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[browningautorifle]

just to let you know the helmet marking I-4461 is the first initial of the last name and last four numbers of the service number which is the Social Security Number of the owner.

I think you'll find this is the heat lot code of the helmet, not someone's initial and SSN... Sounds like a McCord helmet shell...unless it has an "S" stamped with the heat lot number. If the number and letter mentioned are stamped in then they're the heat lot. I suspect they have been written here backwards also.