Does Anyone Know What This Ceramic Relic Is?

[HunterTheFox59]

I found this ceramic ring while walking the banks of a river. It's about 1 inch by 1 inch and has a ring of black glaze on the top, and a small square indent on the bottom with "19" embossed in it. I'm guessing it has something to do with electricity.

-Hunter

 

[UncleBruce]

It's an insulated stand off for running cables along a house such as for a lightning rod cable.

 

[HunterTheFox59]

Thank you, Bruce!

-Hunter