Cleaning and loosening advice please?
			 
			 
			
		
		
		
			
			Hi 
 
This is my first post in this incredibly informative and helpful site.  I've learned a huge amount about the collection of African and Asian daggers and swords I recently acquired.  Now though, I need some specific advice please. 
 
How do I clean this so the writing can be read? 
 
This small Asian? knife has text on the sheath and the handle, but also has a lot of gunk making it difficult to read.  I have a ultrasonic cleaner, but I'm not sure if using that would be appropriate.   
 
How do I loosen this blade from the scabbard? 
 
I'm not sure, but it's probably rusted in.  In the UK we have something called WD40 which I'd use to loosen rusted nut, but I don't know if that is sensible.  I'm told the sword is Tuareg and to complicate matters, I'm sure WD40 wouldn't be good for the leather. 
 
Thanks for your help.
		 
		
		
		
			
		
		
		
		
		
		
		
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