Help with another ceramic insulator

[sparrow75]

Picked this up today because I liked the shape and color pattern. Anyone know age and who made it? There are no markings on it and its approximately 3" tall. Thanks!

 

[sparrow75]

Base pic

 

[BillinMo]

It's the smallest type of "Hi-Top." Most Hi-Tops have a top groove, but these have a side groove.

I'm no expert when it comes to unmarked porcelain, so I looked in the porcelain guide. It only lists one unmarked version, U-778 from Ohio Brass, so I'll guess that's what you have.

 

[Bixel]

Definately Ohio Brass. A commonly seen glaze colour from them.

 

[sparrow75]

Thanks guys. I definitely need to pick up some porcelain reference books at nationals.

I assume these are common?

 

[BillinMo]

Well, maybe not so common as to be in the same league as a Hemingray 42, but there's little demand for brown porcelain from high-volume makers like O-B. So it won't have a high sale or trade value.