Need help with markings

[Nomadr]

I also have this posted in Jan's forum but would like to get some ideas on these marks here as well.

Not sure what I have What I do know is it has been refinished with a new (at some point) barrel. DWM 1916 Mostly Non matching, top half (slide) looks to be renumbered to frame. Toggle numbers ground slightly. I tried to take some good photos but my camera crapped out on me so I did the best I could

Looks like a post war factory refurbish to me but I cant identify the markings?

The markings in the photos are my representation of what they appear to be? It has been suggested that they may be Portuguese?

Bob