Moro Kris with chevron pattern twist core

[kino]

A recent topic on an Indian chevron blade prompted me to post this Moro kris with a twist chevron pattern blade.

My first impression is, the hilt is recent. It would be safe to say that the hilt is 20th century, however I suspect the bands to be older.
The blades dimensions and appearance would correspond to a 19th century manufacture.
There are several twist chevron patterns along the center panel of this blade. In between the chevrons could be monosteel. I have not done anything to this blade other than light oiling. I can't recall seeing a Moro kris with a similar blade pattern.
Results has been nonexistent when I searched the forum archives for the type.
Your thoughts?