I believe these pistols are Turkish/Ottoman, with European locks finished in the near east. 
 
The trigger-guards do not look French to me, and the engraving isn't French either. 
For Turkish pistols, these are very high -end. Congratulations on finding them! 
Actually, going by the lock -work, they appear English locks.... 
 
Edited to correct my English lock bit! 
On looking at the lock-work again, I see detachable pans.  more or less unheard of in England.
		 
		
		
		
		
		
		
		
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