From my collection are three Brookfield CD 133 No. 20 insulators. From left to right, Yellow Green [490] Front Brookfield on the back is NO 20. $35.00, The middle one is a Dark Olive Green [490] Front Brookfield, on the back is NO 20. $50.00. On the right is a Yellow Green [020] which only has No.20 on the back. $40.00. All are in VVVNM condition. Actual postage will be applied to the sales.