Hello Gene,
Congrats, that's really a very sweet blade!
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				I thought that originally, but the shape although ragged through etching seems uniform and deliberate. 
Only two barbs and they are symetrical.   
			
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 Yes, I also believe these are original - just a little corroded.
I am fairly sure I saw such a barb-like feature in keris Jawa but haven't been able to hit my notes/books yet. Alan, any suggestions?
Regards,
Kai