🔎 UNIDENTIFIED Copper Culture rare unidentified object HELP

[Landonthecoincollector]

Hi treasurenet, I need some serious help with this one. It was found in a sandy field next to a very small creek in Oconto county Wisconsin. It seems to be copper as it has patina and is non magnetic. I found a copper nugget a year ago near this one. I was assuming it is native copper culture assuming the copper and not perfect design but I have no idea what it could be. Any help would be appreciated thank you

 

[russau]

To me , it appears to be a ornamental part (1/2) of a mount for a handle that was applied to the side of a similar metal box . But it also don't look like it was mounted to anything. Or maybe it is the other half of a door knocker ,also that never got installed.

 

[unclemac]

it appears to be cast, ans not beaten native copper

 

[villagenut]

Looks cast in mold to me also

 

[searcher]

Looks thick and cast.
Mill marks(grinding) on the underside.

What size is it?