Here's a very beautiful high voltage glass insulator from Russia with an unlisted embossing: 19 AH3 63. (note:the 6 looks like a 5 that was modified to 6). Excellent condition with only teeny base nibbles and a small wiregroove abrasion. Photo taken with strict 5000K full spectrum lighting.

Book value for the listed 1964 embossing is $400-500. Priced to fly at only $100 plus postage. Will cover 25% of postage to Canada.