Seriously Chief? You seem to have stumbled upon the holy grail for Moro kris collectors. This is what Cato refers to as an "Archaic" kris. I suppose it is debatable how far back this form goes, but it would certainly be safe to say 17th century. Some might argue this form could be older. I'd say you particular blade could be as old as early 18thC. A very nice score! Congratulations!