✅ SOLVED What is this?

[WHADIFIND]

The piece in the lower right hand corner? It has a shape similar to a butt plate.

 

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[dinx]

The broken rusted off handle of my sprinklers cut off/on in the hole outside looks the exact same- I recovered it yesterday, and it is
exactly as yours. Or a trunk latch if not ....

 

[ColtsPop]

Piece of a plow

 

[randywa]

It looks like the shovel from a cultivator.

 

[Rmeav8r]

As others have mentioned, probably from farm implement. Square holes for stove bolts would eliminate butt plate.