Hullo everybody,
From the photos posted, my impression is that of a Peninsular Sundang with Maguindanao origin/influence. I have seen similar etching. Pommel can be one piece with the hilt (gilded or not), if made of ebony/horn, or a separate piece of ivory. The cockatoo shape is usually more stylised (smooth). Sometimes, a cup is used instead of a ferrule. Unusual to retain the stirrup.
All the best
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