Spanish insulator equivalent of CD 154. Round drip points. Skirt embossed C.T.N.E. one side E.S.A. the other. Medium shade of teal-aqua with a subdued milky-smokey "rubber band" snaking through (doesn't stand out well in these unfortunately darker than expected pictures). Near mint except a surface rub on skirt and two tiny dome nicks. See original for jumbo sized detailed pictures. $13 plus shipping.