The CD 251 is skirt embossed N. E. G. M. CO. and on the reverse PAT JUNE 17 1890. A deep aqua color with an amber stringer that measures about 5" in length. There is a shallow chip on one corner of the cable top, about 1/2 the size of your pinkie finger nail. Also at the mold line on the skirt, there is a tiny pot stone that broke the surface of the glass. As you can see from the photo, this is a fine looking insulator that will add to any collection. Asking $30.00 plus actual shipping cost. Check, MO or PayPal, no fee.