Any clues as to what this cone may be?

[Kas]

The piece is copper, and heavy on the knob end.

The only thing that comes to mind for me when I look at this—thing, is that where the hole is there was a handle.
My thought is that it's a candle sniffter— putter outer. LOL. What do you think?

Thanks for looking.

HH
Ken

 

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[Noodle]

Thanks, Ken. Gonna put my hubby to work tonight. -Noodle

 

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[wesfrye53]

Now that you've cleaned it, unless it's the camera angle, it looks like brass. If it is, then we're back to a tip to something such as a walking stick, etc.

 

[faaus]

You may find that it was the protective tip on an (old) umbrella.

 

[DigEmAll]

Curtain rod end.

 

[Diggenit2]

I have seen pieces similar to this on harness sets.
Good luck