[Iliad]

O K guys, this time I make no claims about anything, because I don't know what this blade is! So put the whips away; my back is still bleeding from my last foray into the forum. I bought this blade for peanuts as a rusted wreck with no handle. I cleaned it up and had a handle put on it, to make it into a nasty knife, very very sharp. Note the sawteeth on the back edge and the neatly formed notch on the front edge down near the hilt.
Was it part of a polearm?
Brian