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		#1 | 
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			 (deceased) 
			
			
			
				
			
			Join Date: Sep 2008 
				Location: Bavaria, Germany - the center of 15th and 16th century gunmaking 
				
				
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			I do not think the grip is actually of ivory, it is most probably staghorn or bone instead. 
		
		
		
		
		
		
		
	I have often seen excavated bone grips turned green, mostly from copper oxidation (verdigris); maybe the iron sleeve at the base of the grip is copper or brass brazed. Michael  | 
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		#2 | 
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			 Member 
			
			
			
				
			
			Join Date: Dec 2004 
				Location: Bay Area 
				
				
					Posts: 1,725
				 
				
				
				
				
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			Michael, 
		
		
		
		
		
		
		
	Thank you very much for your reply and conservations tip - I will advise my friend to try the procedure you suggested. In the final step, is there a recommended ratio for the tannin solution, such as this many grams of tannin per this many liters of water? Thank you, Teodor  | 
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