Copper letter K slide?

[GameOfTones]

Found in a turn of the 20th century oil boom ghost town in TX. Still cannot figure this one out. Did it slide onto a strap?

Any suggestions?

Thanks!!!

The Walker wasn't found with it unfortunately. Its just for scale!

 

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[Tony in SC]

Belt keeper.

 

[GameOfTones]

Belt keeper.

That makes sense. Thanks!