Bringing out an oldy for comment

[Alam Shah]

Originally Posted by LOUIEBLADES

One theory is that the marks were made from a vise?

Interesting theory. Possible, but unlikely. Unless it is done before the ganja is inserted into the pesi (tang). The 'criss-cross' marks are only visible at the thickest section of the blade, which is about the thickness of a thick file. The 'kriss-cross' portion near the gandik, is less visible possibly due to the filework done while shaping the gandik area.