I also think this is an old Bali blade, probably 19th century, with an old Bali stain. The tip of the scabbard doesn't look like a repair to me. It is very common for there to be a nice piece of patterned wood inlaid into to front of the stem like this.
I agree that the gonjo looks a bit short, though i cannot tell from the photos if it has been shortened or just made this way. The markings are unusual and very interesting and i would think most definitely intentional. No clue as to way though.
Lew, i could be wrong, but i don't think there has been much keris production in Bali post WWII. All those contemporary "Bali" blades we are seeing are coming from Madura or Jawa.