I can only compare your sword to a hanger I have that is British circ 1790 
The pommel has that extended tip or point facing downwards which is not typical of other swords. 
I would say it's British and from the same 1790's period.  
It also has a somewhat French appearance, some would say "Continental" type. 
The grip has been replaced so we can't use that to identify.
		 
		
		
		
			
		
		
		
		
		
		
		
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