Need help with ID. Lamp finial maybe?

[02limitedx]

My boss went out and metal detected an old farmhouse and the surrounding property. Near the old foundation he found this. To me it looks like it could be a lamp finial. It is brass with a silver ( chrome?) plating on the outside. The threads are more coarse than you would see on anything today. I appreciate the help!

 

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[mojjax]

I think it's a horse tack swinger .

 

[nhbenz]

Rein guide terret, a good explaination here: http://www.treasurenet.com/forums/what/313891-field-find-what-s-9-23-a.html

Edit: Mojjax was correct, just different terminology.

 

[02limitedx]

Thanks a lot! Very interesting. I was almost dead set on it being a lamp finial.