🔎 UNIDENTIFIED Tool?

[demano]

Found this at an 1870's farm site, was sticking up out of ground, thought it was an allen wrench at first. Dug it out, its hollow and made of copper? Lot of decorative script on all sides. Thank you for any information on it. Great to be digging again.

 

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[Mud Hut]

It looks like an ornate plane-adjusting hammer.

 

[Randawg72]

It looks like a fancy jeweler's, or tack hammer head. Is the handle stub made of metal?