Hi VN, that's a beautiful piece, I love that it includes all the booklets! Just thought I'd let you know, there's a 'Quote' button underneath people's posts. If you click on that, a little button pops up in the bottom right like 'Quote 1 post' if you click here, you'll start writing a message as a reply to somebody's response, and you can click on it after sending to go back to the message you were replying to. Hope this explanation was clear and of use! :)  

I recently got this vest and the original handbook, it's in great condition, everything it's functional without problem

(reply to 6 corbra actual)I collec wartime stuffs in vietnam and surplus, I recenly got this ARVN m69 body armor, check this beuty out

Can’t wait to see what you’ll find next.

Ive been working on my 620 and both 659s. I have battery packs to replace the internal battery thats non existent.  Hoping to power up soon off the MB and test one out.

More reading show the 51/p is F-111 specific 

Flight helmet is a HGU-51/p… mask was (?) modified for use with it… it’s close    no doubt you have a one off..👍👍

https://www.salimbeti.com/aviation/helmets7.htm

I found this on Salimbeti’s web site

Drive up north a bit to Orange County and visit Vintage Productions