What is this?? Found on an old farmstead in Nebraska, my thoughts are a potato digger or chaff cutter.  It is missing a wood handle.

edge is sharp.  All forge welded together.

I know them as a Clay spade, sometimes called Clay Fork...cuts a slab and prevents the suction from holding the clay to the blade....allows it to release easily.

They use the same open backed idea for excavator  buckets for the same reason.

Alan

Thanks Alan did not think of that!!