New keris blades for comments
 

I acquired some new keris blades, which most likely were produced in Madura.

Please advise on the style of these blades - do they qualify to be Madurese, Balinese or Javanese style?

Hi Alex. These blades are most certainly intended to represent Balinese keris regardless of where they were actually created.
It's had to tell from your images alone, but these appear to be well crafted with nice pamor control and generally good garap (workmanship).