Iron, copper and lead Knife. Tool or Mistake?

[villival]

I found this on my farm yesterday and just loved the shape and colors. Unfortunately, I can only get one photo to upload right now. It's very frustrating, but maybe someone can offer some opinion just based on that.

At first I thought it was some kind of metal spear point, but that is just wishful thinking. It appears to have some copper, lead and iron it it. It's actually a really cool looking piece.

It's about 4 and 1/4 inches long.

 

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[owlcreek]

Maybe a old lead tool for shaping lesd on a hot rod. Heat it with a torch.