Hi Stan,
I think you were on the right track with thinking 'almost' a Kukri.
I think it's possibly of the 'Chin Knife' family. Have a look at these:
http://www.swordforum.com/forums/sho...-Kukri-Wannabe
http://www.bladeforums.com/forums/sh...Battle-Khukuri
Jonathan (Spiral) has more knowledge on these than I, perhaps he will know for sure.
Best
Gene
P.S. Failing that it has similarities with the Thai knives.