Help in identification #1

[Dave1104]

I picked up some knives this past weekend and need assistance in identification. I will post them separately to avoid confusion. Hopefully I have added the photos in the correct size and format.
The first appears to be from either the Philippines or possibly Indonesia in my opinion. But the curve of the blade reminds me of a kukhri.
The length is 23.5" hilt to blade tip. Blade width is 1.75" at the widest part.
The handle is a nice carving of a woman's head with a brass hilt. The tang appears to extend all the way through the handle to end in the topknot of the women's head. On the back of the handle is an empty socket, possibly for a jewel of decorative piece of glass?
The scabbard looks relatively new, and is wood, bound by wire. Looks like a carving of an eagle on it under a sunrise.
My guess is a dahong palay from Philippines, circa mid 20th century?

Can anyone suggest a good reference book or web site for weapons from this region of the world?
Thanks,
Dave