Xas the blade might be Maranao and nice to have a ganga separation line. I would say no later than the beginning of the 20th century, but more likely end of the 1800s or earlier.
However, the hilt is Maguindanao in form and in okir. They also used silver weaving work like this.
Kai is right - get this tested by a jeweler but carefully. The orange bands I would say by the patina present and hue are probably swassa, but swassa plate over copper or solid swassa? Often these are swassa plated but still expensive. Only testing can tell for sure.
I lost mine to theft years ago.
Hold onto this - what a great keeper! (see my avatar)