A Very Nice TK Charles!
I would classify this as a Tilang Kemarau also, based on Banks.
But if I was really an expert, I could tell you exactly the differences on all aspects between a "Tilang Kemarau" and a "Suai".
As I do have some ideas about it, I'm not sure about them!
But maybe nobody can tell the exact differences between those two, so we're only driven students of the few in the "top level"?
The blade looks very nice! I myself have the feeling that the blade is the oldest on the TK. It looks to me that the handle and the scabbard could be later and might be from the same date.
Michael described the hypothetis on the handle allready, which I agree upon.
I think the scabbard looks too perfect, and this in combination with the patina made me have this assumption of being also later.
Could we have a close-up of the carvings on the scabbard?
Maurice