Out wondering around on dec,23/06 Dug up this procelain insulator ( the one on the left )C.P.R, CD 143- dome is embossed, but the lower outer skirt has a mold extending off the skirt 1''long x 3/4'' wide, doesn, t appear to be a flaw, wondering why it may of been designed in such a manner..(look, n to find if there's any value to these JASPERS,) assume fairly common, do find a lot of broke pieces, Andy