Mike,
I think the name was Vietnamese. I don't remember it, but, that was the conclusion we came to, years ago. The gun was run hard, and put away wet for many years prior to coming here. I'll ask, next time I see my friend, who still owns it.
Your notion makes sense. We figured it was a soldiers bring back.
At the end of the day, it is an example of a Halifax version of a Darne that has received little to no care during it's life, and still functions perfectly.
There are many of those examples out there, as well.

Best,
Ted