[Empire_of_Liberty]

Perhaps it could be used as a Go / No-Go gauge for coins?

Or an armorer’s tool for attaching a spear shaft and head?

[missthethunder]

“Or an armorer’s tool for attaching a spear shaft and head?”

I could see it as a tool to make weapons.
But there would be wear around the holes.
The lack of wear on the object is really strange.