upper left is a sikh mercenary. the rest are blades we associate from different parts of asia. a jambiya with an unusual blade, another jambiya and two different mandaus...
the sikh was a personal bodyguard of Sultan Kiram. he actually had a squad of sikh bodyguards. the blades were all provenanced in moroland. of interest is the mandau at the bottom which was given as a gift to (then) Col. Webb Hayes, an american officer, by one Datu Fantog. added below is a steel halbred of the Swiss Pontifical Guard that was given to Mr. Hayes by the Sultan himself. this was all back in 1899, before the Moro Uprisings. Mindanao and Sulu were some pretty busy crossroads back in those days...
my point is, whose to say the blade on Charles' kris wasn't acquired in indo, brought back to sulu, and had a native panday applied the rest of the dress? not a common okir you say? maybe the panday was non-muslim
hypothetically if that's the case, wouldn't the kris as a whole be of sulu provenance? or would it still be called an indo keris?
hence my apprehension on static identification of moro kris...