Warangan treatment of an old Javanese blade?

[Jean]

Dear friends,
I already showed this strong blade attributed to Blambangan or Banten and estimated from 17th century or possibly earlier (end of Majapahit period or soon after). It is very similar to the blades shown in the Krisdisk from the late K.S. Jensen, for instance on figure 77, page 30 of the North-East Java chapter. Unfortunately the blade was shortened at the tip for any reason and the last 2 or 4 waves are missing.
The blade surface is very smooth and shiny, and it shows traces of a refined pamor pattern. I never saw any blade in this category after warangan treatment as all the known specimens are in European museums and the curators won't apparently consider to have them treated?
So I have decided that I should do it for the benefit of the kris people even if it would reduce the blade value, what do you think and which result would you expect?
Regards