Belgium proof - which you knew -  
 
if i was to guess the HL might be the barrel maker's mark 
 
it doesn't fit what I see as a belgium inspector's mark
		 
		
		
		
		
		
		
			
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				"If there is a heaven it must have thinning aspen gold, and flighting woodcock, and a bird dog"  GBE
			 
		
		
		
		
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