Thank's a lot kahnjar1 for your reply ! 
 
I read about Sindhi flintlocks with these kind of large octogonal barrels. 
 
Yes it seems a little short... 
For the hole line and the pan,  
If I have understood 😅 
I think it can be +/-ok , in comparison with other flint plates. 
 
What I would like to do is to dismantle the barrel and plate, clean all and reassemble it  
 I have to remove gently some fixing parts
		 
		
		
		
			
		
		
		
		
		
		
		
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