Here is a boldly-embossed Otis-made lightning rod insulator classified as LRO 215 EIN [020] [F] PATENTED [R] AUG.26.1851 in Clear with attached LRB-O 108 (top) and LRB-O 96 (point) brackets. There is some chipping all around the base, as shown; the worst of it is seen below PAT. Click on View Original for greater detail. Asking $365 for this rare and desirable LRI shipped in the US. CK/MO.