Insulator help. What kind?

[jgas]

 

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[jgas]

No clue as to if this is a lightning rod type or what. Threadless with strange grooves. Any help would be great. Thanks. Jgas

 

[2screwed]

That is a lightning rod insulator.

Glass Lightning Rod Insulators

 

[jgas]

Dug from an 1890 pit. Any clue as to value? Thanks. Jgas

 

[Dug]

I don't know insulators but that is a gorgeous color of glass. Bet that would tumble out nice.

 

[CoilyGirl]

That's crazy,i just dug a half of one of these yesterday, same color. Mine is like the third and fifth row down on the link 2screwd posted.