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I'm sure it makes sense for something, but I don't have a real clue either. Thanks for giving your two cents worth @ericvancewalton.

Yeah I was thinking maybe a leather working hammer.. until the open end pic

That would have been a good guess. I suppose it could still be used for leather working -- the open end hammered on the leather would make a square! I isn't as durable and heavy as the other leather working tools I have used. Of course it could be used for pottery, but pretty sure that isn't the original intent.

Thanks for the comment and giving me some input.