U-821 LAPP 5839 Porcelain Insulator Looks like a U-821 porcelain insulator. Very nice coloring to the glazing, no issues to report. Has LAPP 5839 stamped in black ink under the glazing. The photograph is part of the description. No issues unless noted otherwise. Priced to move at only...$8.00...plus postage 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!!!!