Hello My Friend,
in which other collection would fit this rare piece better as in yours?
Your collection of brass and copper bladed daggers from Luzon is unique and copper or brass bladed gunongs are more as rare so it is an addition to your collection you miss already long.
I would place this piece to the 1920ties until 1930ties and I agree with you that this piece would do the same job as steel bladed gunong. Hope that I will be able in the future to add a similar piece to my own gunong collection.
Regards,
Detlef