Hullo JeffS!
To me, it's a Manjeuseup Leres (sunbird, straight blade), following a pakem that goes back to at least 15thC.
This may be of interest:
- if the blade length
>42cm., it's a sandang walikat (worn over the shoulderblade)
- if the diameter of the tang base
>0.72cm., it's a tjorok (doubles as emergency sword)
Best,