Perhaps I didnt use the best photo to illustrate Stan, Here some more of them from a shop in Guam {Also courtesy of N2S.} {_about 5 years ago.}
I am not an expert in these, I am a student of kukris but through them I have come across such things. I dont think your ignorant, a few yesrs ago Idve wondered what it was as well.
These pictures display the many types available showing various matching features I think? The down curved blade, the protrusian at the riccaso, the plainer, triple riveted hilt.
Over the years have seen others more like yours also id. as Chammoro knives. Sadley I didnt keep the pix.
Personaly I think the style of riccaso is a very strong id feature with these. But the whole gestalt fits to my eye.
Sadley I have no knowledge of the original decorative features of the Chammoro people. I would imagine your knife could tell us something about them though.
Its a nice piece.
spiral