This tall & skinny one appears to be a U-180. It is recessed-embossed "Ohio Brass" with the "B inside the O" logo. It's a bit of a leaner, which definitely adds charm. The color is a mottled reddish-brown.

This piece is one of a few interesting porcelain insulators I was lucky enough to have in my possession for just a few days before delivering them to their new owner. I liked them so much, I decided to photograph some of them and post them for reference.