Alan, 
 
Thanks for your clear explanation. The blade has that triangular European bayonet pattern. As I wrote before it was my first thought. It is very likely that this is the origin indeed. 
 
I made some pictures of the scabbard. I hope it will do. 
I don't think it is pure silver used for the scabbard. It has a copper smell, so i supose it is silver plated or an alloy.  
 
The question of Nechesh is a nice one too. Being dressed as a command baton it would be purely ceremonial, but if i look at the blade it isn't so ceremonial at all and will leave a nasty problem for the guy who's standing at the wrong side of it.
		 
		
		
		
			
		
		
		
		
		
		
		
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