Here is a recent acquisition that comes from the Tagbanua people of central Palawan. It has several features that resemble Moro weapons -- notably, the shape of the hilt and scabbard, and okir engravings on each. I have not been able to determine if the Tagbanua are a tribal group of Muslims or if they simply copy the weapons style of the Palawano or other Moro groups.
In any case, this bolo bears a striking resemblance to a bangkung.
OAL in scabbard = 21 in.
Length of blade = 14.75 in.
Length of hilt = 5 in.
Thickness of blade just in front of hilt = 3/16 in.