Any guesses

[Joe73]

. I found this near a cannonball fragment that I recently found near a battlefield but I don't know what this is. Any information would be appreciated

 

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[4x4x4]

....Gee Joe , that's a tough one. Possibly some other pic angles would help. I see it is very fragile.
Good luck and welcome from the left Coast!

 

[digger460]

Fence staple?

 

[ARC]

Looks like this could be a cannon linstock.

 

[ARC]

Similar ... but not limited to... one like this.