The closest match that I could find to this wonderful, old cable top is U-660, but the color is not listed in the porcelain price guide. It's sort of a drippy burnt butterscotch with heavy mottling all around the top. Although there's a noticeable base chip, there's also several "extra" bits of slip that adhered to one ear, the wire groove, and inside between the skirts, all of which have been glazed over. So this insulator is actually factory mint. Asking $12 plus postage.