I was wondering about those holes and the dark patina, CharlesS. Thanks for pointing it out.
Salamat sa insights, Battara. I'm happy to know it came with a Maguindanao scabbard.
I've noticed that nicer scabbards (hardwood with okir/ukkil on brass rings) are usually later additions. They are heavier and more decorative compared to the evidently older scabbards that some of my krisses came with. Usually the older ones are no frills and practical. I think I'll start another thread on this.