Sid, this is a Balinese keris, it is 41.2cm in length = +/-16.25", that is right on the edge of being too long for Javanese, apart from which the original catalog description comments that it is accompanied by a batun poh wrongko. 
 
So question is now what has happened to the wrongko that was with it when it was exhibited? 
 
The second thing is this:- it needs a baton poh wrongko , not a gayaman.
		 
		
		
		
		
		
		
		
	 |