YOUR EXAMPLE LOOKS LIKE FIGURE E ON THE PLATE OF NAGA WEAPONS IN THE POST ABOVE. I CAN'T ADD MUCH TO THE POST YOU HAVE LINKED ON YOUR AX EXCEPT THAT PERHAPS IT WAS PLATED AT SOME TIME WITH BRASS OR BRONZE OR PAINTED. EITHER WAY IT LOOKS LIKE A GOOD IRON BLADE THAT HAS A COATING THAT HAS WORN OFF. A NICE EXAMPLE OF THE FORM.
