Kai once again is on the money. I would posit 1930s-1940s.
I will also note that the copper clamp (baka baka in Maguindanao) has a nicely chased pattern - best I've ever seen. There is a possibility that the pattern is acid etched - better pictures might better determine it is truly chased or etched.
(BTW - I'm Jose)
Also welcome to our little forum!
