It kinda looks like one that I have and I could find nothing on it other then it was made in India and the treads on the fasteners are hand cut.
I would start there an see if yours are machine cut meaning some kind of standard thread pitch.
I could not find anyone to check mine out so I did it myself with a bore light and big horse shoe magnet and iron shaveings to check for cracks in the Damascus. I didn't find any problems so I started low and worked up to 2 drams and then quit. If you have a crack the shaveings will line up on that crack as the crack bisects the magnetic field.