This is a CD 135 (010) base embossed Chicago in blue. This is the nicest based embossed one I have ever owned. Other than a couple of pin head pecks that you really have to search for, this one is in very good condition. Most of these have wear and light flaking around the wire groove. This one does not. I would challenge you to find one in better condition! Email with questions or for additional photos. Price is $95 delivered to your door. Sorry, this insulator has found a new home!