This porcelain Westinghouse radio treated cable top is in pristine condition. The glaze is a captivating combination of burnt sienna with blonde undertones, and it looks more like it was intended as art than industrial hardware. I don't know the U-number and my efforts to search the ICON photo galleries for something like it turned up nothing close. I'm going to ask $25 shipped in the US, and if someone with more knowledge about this piece tells me I'm way off base, I'd certainly appreciate the info. Thanks for looking.
UPDATE-An insulator friend much more knowledgeable than I identified this for me as a U-790A. Price reduced to $15 shipped in the US.
What do you want to trade?