I dont know Fernando , I know zilch of Chinese weapons but i would guess they were made specialy for General Antonio Joaquim Garcias collection? {with or withou his knowledge...}
They exhibit a hodge potch of parts welded together I think?
A Tibetan style Dorje & spear?
& the worst examples welding I have ever seen on any weapon bar none.
I am sure the curaters are noticing such things also.....
Spiral