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				Robert, any chance that this is a recycled oversharpened blade ?
			
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 Hello Rick, At this point from what I can see I do not think it is, a recycled blade perhaps (waste not what not) but being oversharpened to the point of ending up with this shape I do not think so. To me it has all the appearances of being intentionally made in this form. Later when I remove the grip for repair and can inspect the entire blade thoroughly I might be able to tell more. Here is an interesting link that was sent to me on knife fighting. 
https://www.youtube.com/watch?v=_oSxFJ2et4s Imagine if two of these were being used in this manner. 
Best,
Robert