I am a slow thinker, so bear with me. 
 First of all, it has a kindjal blade and the upper fitting of the scabbard is also in the kindjal mode ( so-called antabka). The blade of the kindjal is very massive and has a pronounced diamond section, i.e. features not very popular in the Caucasus  or Turkey proper but frequent all over  the Balkans,  from Bulgaria to Greece and up north. A lot of Circassians and Daghestanis were  exiled by the Russains and settled in the Balkans by the Ottomans.  
 Eared pommel is self-explanatory: Ottoman Empire. However, design pattern has both Turkish ( tulip flowers) and European motives ( flowing ribbons, chevroned  ribbons etc). The lanyard hole in the middle of the handle is peculiar. But kilijes had  similar security  feature. 
 Altogether I would venture to place it in the Balkans, the crossroads of Europe and Turkey proper.  
Obviously, it is a unique piece, made for a one-time buyer who wanted both Caucasian and Turkish motives for his weapon. 
 The designs on the blade are painfully familiar, but I just cannot place them ( Alzheimer moment? delusion?)  
 How does the scabbard look? I guess comparing its designs with those in the recent Elgood's book might be useful. 
My 3.5 cents worth.....
		 
		
		
		
		
		
		
		
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