Thanks for sharing guys, very interesting! That horn handle is beautiful.
Although I'm not entirely convinced mine
is filipino, it most certainly shows a strong relationship to these with the chiseled forte and the leaf shaped blade.
More Sinified aspects of mine is the straighter shape and the way it builds up width from the forte, giving it more of a Chinese "feel" to it. Compare that effect to, for example, these:
Chiseled engravings on blades, were also quite common (and often floral) in Vietnam.
All considering, we might assess it originated somewhere around the South China sea area, sharing shores with South China, the Philippines, and Vietnam.
Would you guys agree?