Blade-wise, it looks more like a Straits Bugis blade. But then, the Bugis did move quite a bit within the Malay Archipelago that it had influenced Sumatra, Peninsular Malay and Riau blade forms. A subtle clue that could tell them apart is the blade materials used. The cross-section and some minor details can assist too but not definitively. It had been discussed before that, to classify the breakdown by region is near impossible due to the mix and match across the archipelago.
