Civil War era camp? Plumbing part?? Fuse??

[Oilfield Diver]

Another item from my drawer I had found this year. What is this? 1830's to 1900's Civil War camp now private property. Doesn't look too aged, could be modern. About the size of a dime in width, a few inches long. Thx.

 

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[aka da Prof]

most likely a storm door bolt sleeve

 

[DevilDog812]

looks like a chicken coup egg counter