Halloo, just as an aside- according to a Maguindanaon culture-bearer of the Salipada lineage, the proper terminologies should be: 
 
If it's a straight kris, it's called "kris sundang." 
If the kris has waves, then it's called "kris a lanti." 
 
These terms are different from Sulu's, since kalis has its own proper terminologies, as asserted by modern-day Tausug culture-bearers: 
 
If it's a straight kalis, it's called "kalis buntul." 
If it has waves, then it's "kalis ____ siku," the number of waves is specified. 
 
As for the age estimates for the krises, I believe the first one is late 1800s-early 1900s, while the second one is early 1900s-preWW2. I based these estimates by checking the trend of several provenanced museum samples (date of acquisition).
		 
		
		
		
		
		
		
		
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