Ed and Andy...Thanks so much for your help and opinions....
The bayo itself is VN era..

The knuckle part handle is a intrical part of the whole thing.. Never took one apart before. Really cool as you only get the one piece. It was wrapped in a lightly greased brown wrapper.. It had some marking on it but wanted it on there I just didn't even take note of them!. It had not extra flashing , and matched the other half of the handle material perfectly! Went on nice and easy. Kind of weird because its offset because your only putting on half of the handle!. Really nice design and goes on literally in 2 min!! I like it.
Hope to never have to use it. ,,,thanks again... Anyone that has a old one? One that you know for sure is at least 20 years old?? Would love to see it...,G.