Very hard to find CD 154 C.N.R. insulator, with a diamond on back skirt. There are only a few of these around and I don't remember seeing too many available for sale. The colour is straw. Damage consists of a 1" chip to wire ridge and a ¾" chip on inner skirt. Displays well. Here is an opportunity to own a rare and seldom seen insulator. Price is now $435.00 which includes shipping.