A INTERESTING MAK FOR DISCUSSION
 

I SUSPECT THE ORIGION OF THIS FORM IS LIKELY INDO-CHINA, CAMBODIA, LAOS, VIETNAM ,ECT. BUT THAT IS JUST A GUESS ON MY PART. THIS SORT OF WEAPON /TOOL IS PREVELANT IN QUITE A FEW AREAS AND COMES IN QUITE A FEW VARIATIONS. TO MY KNOWLEGE THERE HAS NOT BEEN A COMPREHENSIVE REFRENCE DONE ON THEM.
THE PANABUS OF THE PHILIPPINES IS THE ONE MOST DISCUSSED HERE ON THE FORUM BUT THE MAK OF THAILAND HAS BEEN MENTIONED. THERE ARE SEVERAL VARIATIONS OF THE PHILIPPINE PANABAS SO IT IS LIKELY DIFFERENT VARIATIONS AND FORMS ARE TO BE FOUND IN OTHER COUNTRYS AS WELL. ANY INFORMATION, COMMENTS OR PICTURES OF OTHER FORMS WELCOME.
HERE ARE SOME PICTURES OF AN EXAMPLE RECENTLY SOLD ON EBY.

Originally and still used as an agricultural tool today. You can buy both straight blade and curved bladed versions in markets in Thailand, Cambodia, Laos, etc. They are quite effective for clearing underbrush as you will see in the video. Kind of like a beefier and modified version of a sickle. :-) SEA Billhook.

https://www.youtube.com/watch?v=dCSsEFLpi5Q

Mak from Vietnam.
 

Hello,

This mak in my collection is 26 inches in length overall. The blade is 11 3/4 inches long with a width of 1 3/8 inch and a full width of 1/2 inch at the spine. It is extremely sharp and solid. The grip is made of an unexceptional wood and cracked from age and use. It is14 inches in length, and bound with copper wire.

This mak was brought to the US from Vietnam by a war veteran in the early 1960's. A tag on the mak reads “Chu Lai village.” Chu Lai is a seaport in the Quang Nam province of Vietnam. It was the site of the first major US military operation in the Vietnam War, and served as a United States Marine Corps base from 1965 - 1971.