This unmarked white porcelain M-2150 is known as a Kootenay from an area in B.C. Canada it is said to have come from. It measures 6 1/2" wide by 6" tall. The insulator is in very near mint condition with a small surface scuff mark below the cable top. A super quality well made porcelain insulator. Priced at $95.00 plus FedEx shipping cost. Payment by PayPal friends mode or check. Thanks.