Join Date: Mar 2010
Location: 40˚00' N, 83˚00' W
Alan, I agree that your observation about Java likely holds true for most of the keris world: to wit, the farther the distance from the courts (or Java entirely, for that matter), the more variation in the type form. And indeed in Sumatra one sees all sorts of variants pretty far removed from the original form.
We'll never know for certain where Green's keris is from, but I think Sumatra is a pretty fair guess.