CD-135 BLUE CHICAGO INSULATING CO. Insulator ( Upper Shoulder) CHI. INS. CO. PAT. OCT. 16. 1883 ( F-Skirt) a glass dot. Nibbling and flaking with a ding around the rim, a stress crack between the INS. & CO . This crack has been there for over 15 years. You have look hard to see it. NO Issues with the wire groove. Very fine micro bubbles in the BLUE glass is a plus. Still a very good buy at ...$55.00... plus postage. PHOTOGRAPH TAKEN OUTDOORS . Buy with confidence! I ship USPS Priority Mail, with the buyer paying the actual shipping... Payment may be made by pay- pal or other forms. ---- I DO NOT SELL FAKE, PAINTED, STAINED or ALTERED INSULATORS. Don't wait for a sale, it's not going to happen. ** REMEMBER No Buyers premium to pay!!!! NO Bidding!!!!!