Nice piece Roy, really interesting blade style.
Here's an example from Gardner's book on Keris - sorry about the bad photo, but there's a Parang Jengok for comparison too.
the text:
1. Parang Jengkok 2. Kelantan: parang bengkok
3. Golok jambu. 4 & 5. Java: kudik.
Gardner does also call it a Kelantan Kelewang ("Golok jambu or the Kelantan Kelewang" pg 73) - maybe Sajen can clarify the two names, perhaps one is local, the other general? How wide-spread are these blades?
Gardner offers an little anecdote: one would swing the blade over their shoulder to "spike" their enemy in the brain as they are passing by!? Hearsay by Gardner's own account, but interesting.
After seeing this somewhat irregular style of blade I was wondering if is it possible that some of the weapons depicted on "Weapons of Moroland" plaques are actually of foreign origin/trade pieces (assuming that some are not made up entirely)? There seems to be a fair amount of "spiked" pieces shown on the plaques, but I haven't seen too many historical examples of "spiked" blades coming out of the southern PI. I know it's a stretch, but it might explain some things....