I picked up this 1964 era 2-8 about a month ago. Tonight I talked to the original owner by phone (two thousand miles away from me) the knife spent 64 and 69 in Vietnam, (Phu Bai, Pleiku) then liason work for tow years in Thailand. Intresting story, I hope I can get it wrote up in the Knife Knews. I'll add this... he ordered it and received it in Vietnam in 1964, and verified the sheath as the one it came in, in 1964.