Hello.    Usually , there is a tag inside the helmet and another tag with the liner.  Probably a P3 helmet  with p4 ear pads . Nice helmet ! 

You ask for opinions and I have lots of those so here is mine. I don't like it. First conventional wisdom says they were never made in metal they were all bullion embroidery but you know what happens when you say never. It is cast rather than die stamped which is a cheaper and an easier process for making fakes. The fact that the anchors don't fit the shield is a big red flag and since they are both cast they were probably made together. It may be a prototype but considering how much this would be worth if real I would need more that a may be. 

aerialbridge you nailed it fast, thought it was gonna be one of those where it takes a lot of members to go through and view before somebody got it.   In the series Kline's character as you recall is a Vietnam era Marine Corps Vet, while his best Friend Jack was in the Navy at that time, don't think service in Vietnam was ever mention for Kline's character, nor Jack, if Jack served in South East Asian Waters, or In Country, you know like Da Nang Cam Rahn Bay, the Mekong Delta etc.   Tried looking for Kline in the O Resister but he's not listed yet as of 1 Jan 1969, indicating he came in as 1969 moved forward, lets say for the sake of argument he enters in like March or April of 1969.   As to one of the girls, Janet LOL.    

Guys I just picked up a group of Navy hat badge insignia, can anyone help me identify and evaluate.  I see prices all over 

Thank you for the insight! I did not know, that it was mandatory to fasten the neck button... I don't even want to imagine how uncomfortable this must have been... Especially with all the gear, it must have felt like a noose...

I just acquired 17 of them.

I never said it was model, I said it was made in 1931 and was inspired by previous uniforms and ideas.  

That makes sense, thank you :)) But why was this a common thing with the og107 jungle fatigues then? Wouldn't the same standard apply to these as well?   Jules

Cool one Bluehawk, never seen this Rocwell before.

Recently saw this on line a took a shot at this strange looking patch that I had never seen before and apparently just missed by others. Once I received and examined visually and blacklight test negative,I went to references to check branch colors and found black insert was for Chaplain service. Apparently these were for officers. Perhaps a new discovery and if so probably as rare or more so than finance ,armor and aviation versions.