This insulator is a CD 121 embossed on the front; "BROOKFIELD" with an "XO" on the dome and 5 blots on the back. This is the [030] listing in the book. It is a dark yellow green color. The insulator is in excellent very near mint condition with no chips or cracks. Priced at; $35.00 plus shipping. Payment by PayPal friends & family or check. Thanks.