I picked up this M20 off of Gunbroker a few weeks ago. It's my first papered Vietnam bring-back firearm. I feel about 10x more knowledgeable about authentic papers after looking at this first set up close. Upon a glance, they are obviously authentic. The holster noted in the paperwork was not included.
The paperwork came in the Official Records envelope and included: two copies of a DD 603, one of which had his signature signing the pistol over to another soldier (deceased in the US this century), one copy of a DD 603-1, a group photo of SSGT Paul (cropped image of Paul shown), and one Temporary Export License. Paul, who originally obtained the pistol, is still alive based on my internet searching, so his Service Number (SSN) and last name on the paperwork have been redacted. Paul apparently gave it to James (101st Airborne) a few weeks before leaving RVN. Paul was with the 88th Transportation Company, 1st Battalion, 22nd Infantry Regiment, 4th Infantry Division.
It's certainly got plenty of jungle patina but is in better shape than it appeared in the listing pictures after cleaning with 30W oil. I'm very, very happy with it. Mismatched magazine but all of the other numbers match. Bore is beautiful, gauges at .301". Interior bluing is excellent and it operates perfectly based only on a non-firing mechanical function check.