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			 Quote: 
	
 Interesting Gav, can you cite the thread regarding the copper & rank? I do not doubt it. I've seen with some Thai swords a copper, brass or gold disk/ or small tsuba.  | 
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			Electrum = Naturally occurring silver & gold alloy 
		
		
		
		
		
		
		
	http://en.wikipedia.org/wiki/Electrum List of Alloys http://en.wikipedia.org/wiki/List_of_alloys There are different hues of gold... http://en.wikipedia.org/wiki/Colored_gold  | 
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			 Quote: 
	
 Following your links further I came to this one; http://en.wikipedia.org/wiki/Billon_(alloy) It explains a mixture of both materials and its ancient roots. Thanks Gav  | 
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