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					Originally Posted by Mark Bowditch
					
				 
				One of the nicest features of Bhutanese swords, in my opinion, is the hairpin folding pattern in the blades.  Such a pattern is faintly visible in yours under the patina and rust.  If you are not averse to restoration (versus conservation), you might want to have it polished a bit and etched to bring out the pattern. 
			
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A little 600 grit and WD40 should help. Then 1500 if it does not  make it too muddy.
Thanks Steve also!