Huge old made-in-the-USA signal insulator, this CD 170.1 is a piece and a half! From the huge drip at the top of the pinhole to the fizz throughout the glass to the Continuous Drip on the base, this oldie but goodie is "dripping" with character (continuously!)!! A few scattered pinhead pricks and one match-head sized chunk out of the upper wire ridge as well as a bit of nibbling along the sharp base edge above the CD is all the damage on the piece. The fizz in this puppy looks much better in person than my pics (this and the next one) can portray. Asking $25 + shipping, and thanks for looking....