I don't really have much to add regarding this one that hasn't already been mentioned.  Blade, handle and scabbard do not "jive".  I think the scabbard is WWII-vintage, but the blade and handle look mis-matched. 
 
I'd actually like to see some better pics of the scabbard, if possible, Tim.  I have a WWII dha with a very similar scabbard.  It's the one with the "BP ->" (Burma Police) marked blade and guard/pommel/scabbard fittings crafted from brass shell casings.
		 
		
		
		
		
		
		
		
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