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I have found a number of these odd items.  They are all very thin, approximately the same size, and tapered toward the top (top left example is different from the others).  Each example has been broken in half.  None have flutes, so I do not think they were square knives.  They have all been very intentionally shaped into very squared ends.  I thought they might have been triangles due to the tapering, but they just do not look right.  I also thougth they might have been gun flints, but they just do not look right for that use either.  These have all been found on the same farm here in Wayne County Ohio by myself.  Any thoughts?

 

Thank you, Gregory Dush