Ohio Brass Electrical Insulator

By Boomkat, 13 July, 2012
Description

This is an item my wife and I picked up at a garage sale about 3 years ago.  We thought it to be a candle holder and that's what we have been using it for.  After a little more research, we discovered it to be an electrial insulator.  The markings are SOT with a B inside the O.  Also, there is a 5 to the left of the O with a B inside and then a 0 after that.  Any help would be greatly appreciated.

Category
Ceramics and Porcelains
Medium
The item is made of ceramic but is quite heavy.
Distinguishing marks
The mark is SOT in a circle with a with a B inside the O. Also, there is a mark that has a 5 then a O with a B inside the O and then a 0.
Condition
Good
Size and dimensions of this item
About 9 inches tall and 10 inches wide on the upper tier.
Date Period
Not sure
Weight
Between 15 and 20 pounds
History
Bought at a church garage sale in Wisconsin
Price Paid (If known)
One dollar
For Sale?
No
Photos