CD-106.3 BLUE DUQUESNE insulator 4 ribs No embossing on this BLUE GLASS Duquesne produced insulator with 4 ribs. It has a slice on the skirt that extends to a chip to the base. The glass is very rough and crude very typical of a Duquesne product..$10.00... 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!!!!!