Clamp?

[Don Chiasson]

Cast iron pretty sure, looks hand engraved on front side. The hole is not supposed to be there, believe jus an opposite screw hole was originally there.

 

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[SpookyTeddy]

It looks like some sort of old fashioned pipe clamp to me.

 

[Don Chiasson]

Could be off of one of the boats from the Plymouth colonies MA considering where it was found makes this very possible.