This is a tougher Am Tel & Tel CO CD 121 EIN to find!
The EIN is  (F-Skirt) AM.TEL.&TEL.CO. (R-Skirt) A SB
The color is Hemingray Blue and overall the insulator is in very good condition. Two small shallow flake chips on upper wire groove on Front Skirt side, one small flake chip on upper rear wire groove, and just a couple shallow flake chips on the base.
This is a must for your Am Tel & Tel EIN collection!
Asking $10 plus shipping.