Rick, I seem to recall reading somewhere that one of the major indicators of an early blade was its size:- smaller blades, sometimes about the same as a Bali blade size were supposedly older. 
 
As to pamor, this blade looks like it has a steel core. 
 
If this is so, I would certainly be happy in calling the pattern welded outer skin of the blade "pamor". 
 
Even if it did not have a core, I feel that the name "pamor" is still OK, as the word has the idea of "mix" inherent in it, and this material is definitely mixed.
		 
		
		
		
		
		
		
		
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