My east coast Denver expert tells me that this is a medium lavender colored CD 121 W.F.G.CO. He also tells me that it has a value of $150 to $200. There are two shallow base chips. One is just about 1" long and the other is 1/4" long. There is what appears to be a 1 1/2" stress crack in the wire groove. It`s slight but should be mentioned. Overall, as you can see, a very nice looking insulator. I`ll price this one really fair at $75 and that includes shipping.