This insulator is a CD 106 embossed Hemingray - 9 on the front and Made In U.S.A. on the back. It is the [170] listing in the book with the backwards "N" on the front and back. The insulator is a light Hemingray Blue color. It is in very near mint + condition with no damage. A cool variant with the error embossing. $20.00 plus shipping cost. Payment by PayPal friends or gift mode or check. More photos available on request.