Right On Falcon,
They turn up on rare occaision on E-bay. I have bought seven over the last seven years on e-bay. Only one has a bleed me not handle and it has the most ornately carved handle and sheath of them all. All the rest are more utilitarian and plain looking and have handles of water buffalo horn. I have tried Kukris,all manner of machetes, all kinds of American and asian made bolos, but I've NEVER mached the chopping efficiency of this negrito blade. These knives are REALLY hard to find. I buy every one that turns up on e-bay.
Kix

PS: check out the photobucket URL's I just posted of two of my Negrito bolos.