This insulator is a CD 303 top and CD 310 base that is known as a Muncie. The insulator is in very near mint condition with only one drip in the back with a flake off it and 2 drips with open bubbles in the tips. This one has really nice bold embossing. Priced at $180.00 plus USPS Ground Advantage shipping cost. (around $30.00).Thanks.