Requesting Help!! Identifying the specifics of a Kris

[Mickey the Finn]

I had been cosidering, while suffering from non-COVID related illness over the past 7 days, about making a post pertaining to D.I. Yogyakarta, Letjen Soedirman and other loosely connected topics, but I'll hold off, perhaps indefinitely.
And thoughts of rapiers at dawn had crossed my mind, as well... But I don't own a single one. The closest thing I have is an Indian-made copy of an AN XIII cuirassier sabre/ pallasch/ call it what you will.
And as I've said before, if it isn't cricket, it's just not cricket, Old Boy. And besides, Robert Mugabe is said to have said "Cricket civilizes people and creates good gentlemen". If this is the case, then surely differences of opinion can be settled in a less sanguinary manner. And I'm neither implying nor denying that any difference of opinion exists.
Surakarta is certainly the senior branch of the House of Mataram. This is a fact which is beyond dispute.
You're a very magnanimous man, Alan Maisey.
Sincerely and Respectfully,
Mickey