Here's one with some age on it.  Not exactly "kitchen" (open-air butcher shop, perhaps).  It is an Acheulean hand-axe found along a river bed in central Ethiopia.  Its about 5 inches long and 3 wide, and upwards of 1.5 million years old.  Its quite something to hold, considering that the guy who made it wasn't even fully human (probably Homo erectus).
		 
		
		
		
			
		
		
		
		
		
		
		
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