Surakarta Keris 3 luk

[A. G. Maisey]

The form looks like a tilam upih with 3 luk, whether the three luk are original or a later modification, I cannot know with any certainty, however the narrow blade & lack of erosion to the wadidang does seem to point to a modification.

How long is the blade, measured from the top of the gonjo to the point?

I cannot read the pamor or if there is any pamor, but I can see metal grain, I feel that this might turn out to be a pamor sanak blade.