Hello Rick, 
 
That's an interesting one. This looks more like a northern Malay keris to me - a few more pics may help. 
 
Despite the uncommon pamor motif (for keris Melayu), the blade doesn't appear to be of high quality - tough to estimate an age. The silverwork doesn't look like early 19th c. quality to me though. 
 
Maybe the number is based on numerology rather than specifying a year. Also commemoration dates can be found on keris. 
 
Regards, 
Kai
		 
		
		
		
		
		
		
		
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