what is it 13

[alderan33]

This may be a piece from some type of old animal trap. I found this in an old pile of iron near a Fort. I think the Smithy had this stuff hauled away and dumped near the top of a hill. There were hundreds of pieces of iron everywhere, including dozens of old horse shoes with square tacks.

[lumbercamp]

That's an old saw blade. See how each tooth is sharpened at an opposing angle.

[lrgcent]

[kuger]

Yep,def. not part of a trap