Here is a CD 154 embossed Vidrart S.A. T.E. A17 - back Industria Argentina ( I see no Christalerias embossed) with smooth base. Insulator has several BB dings and a chip on top wire rim about 1/2". Insulator in clear in color. I'm asking $25 plus actual postage. Another insulator from Marilyn Albers collection.