There has been some question about the existence of the CD 102 Diamond [135]. I believe that this is actually the same insulator as the B.T.C. blotted out ponies listed under B.T.C. in the Price Guide. You really have to look close at these insulators to see that actually there are little circles for blot outs on one side and a "fill in the letter" type blot out on the other side. Depending on the insulator the diamond on either side can be non existent. I have a light purple, a green olive and two bright blue midnights. All of mine are from the very same mold! You can barely see the diamond in this picture.