Hi Rafngard:
I agree with Detlef. The first one is second half of 20th C, and the other two are earlier 20th C.
While there is no reason the T'boli could not make
gunong like these--they make excellent blades that are sought after by other tribes (usually the small kampilan style)--I have not heard of them making
gunong before.
Nice family--momma, papa, and the two kids.
Ian.